{"title":"Synergy Amps","description":null,"products":[{"product_id":"synergy-marshall-jcm800-module","title":"Synergy Marshall JCM800 Module","description":"\u003cdiv class=\"flex flex-col text-sm pb-25\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:b0e795bd-9108-4e31-8e1e-381f0f64695a-3\" data-testid=\"conversation-turn-6\" data-scroll-anchor=\"true\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" dir=\"auto\" tabindex=\"0\" data-message-author-role=\"assistant\" data-message-id=\"40054b99-68f6-45fa-b558-3916827b6890\" data-message-model-slug=\"gpt-5-3\" data-turn-start-message=\"true\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert w-full wrap-break-word light markdown-new-styling\"\u003e\n\u003cp data-start=\"0\" data-end=\"20\"\u003e\u003cstrong data-start=\"0\" data-end=\"20\"\u003eMARSHALL JCM 800\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"22\" data-end=\"470\"\u003eFew amplifiers have achieved the near mythic status of the Marshall JCM 800. When it first roared to life in the early 1980s, it did not just define an era it ignited it. Kicking off a new generation of tones, the JCM 800 became the definitive voice of hard rock and heavy metal. Big, aggressive, and unmistakably British. It took the foundational crunch of the Plexi and added the gain, punch, and focus that powered a generation of guitar heroes.\u003c\/p\u003e\n\u003cp data-start=\"472\" data-end=\"830\"\u003eMarshall JCM 800 2203 100W and 2204 50W circuits, with their single channel, cascaded gain stages, and signature midrange roar, delivered a level of authority and articulation that set them apart from anything before or since. It was the perfect balance of power and precision. For countless players, the JCM 800 is not just an amplifier it is the amplifier.\u003c\/p\u003e\n\u003cp data-start=\"832\" data-end=\"1350\"\u003eNow, Synergy and Marshall have teamed up once again to bring you, for the first time ever, this legend in a three tube, dual channel preamp module. Utilizing Marshall’s original circuit design, the JCM 800 module delivers the raw energy, attack, and articulate overdrive of the iconic vertical input 2203 and 2204 amplifiers. Whether you are chasing the three dimensional crunch of 80s rock or crushing tight gain for modern metal, the JCM 800 module gives you the legendary tonal experience that defined a generation.\u003c\/p\u003e\n\u003cp data-start=\"1352\" data-end=\"1386\"\u003e\u003cstrong data-start=\"1352\" data-end=\"1386\"\u003eDUAL CHANNEL THREE TUBE PREAMP\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1388\" data-end=\"1888\"\u003eEach of the JCM 800’s two identical channels feature independent Preamp, Bass, Middle, Treble, Presence, and Volume controls, giving you complete command over your gain structure and tonal response. From dynamic low gain crunch to saturated high gain sustain, the JCM 800 module delivers every nuance of the original amp’s voice. Independent Master Volume controls for each channel allow you to precisely balance rhythm and lead levels with all of the amp’s dynamic character and harmonic complexity.\u003c\/p\u003e\n\u003cp data-start=\"1890\" data-end=\"1942\"\u003e\u003cstrong data-start=\"1890\" data-end=\"1942\"\u003eTHREE TUBE MODULE WITH BUILT IN 0 WATT POWER AMP\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1944\" data-end=\"2033\"\u003eThe JCM 800 module introduces Synergy’s three tube architecture in modular preamp design.\u003c\/p\u003e\n\u003cp data-start=\"2035\" data-end=\"2501\"\u003eBeloved by generations of players, the original JCM 800 truly came alive when cranked, thanks to the interplay between its preamp and power amp stages. Synergy has now captured that same raw energy and unmistakable feel in a compact, modular form. Two 12AX7s drive the preamp, while a third 12AX7 powers the built in 0 watt amplifier and phase inverter. With the JCM 800 module you get the sag, feel, and harmonic bloom of a fully cranked JCM 800 head at any volume.\u003c\/p\u003e\n\u003cp data-start=\"2503\" data-end=\"2674\"\u003eThe JCM 800 module delivers the authority, grit, and edge that made this amp an icon in rock history, while propelling Synergy’s modular platform into new sonic territory.\u003c\/p\u003e\n\u003cp data-start=\"2676\" data-end=\"2714\"\u003e\u003cstrong data-start=\"2676\" data-end=\"2714\"\u003eBRIGHT AND HIGH LOW INPUT SWITCHES\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"2716\" data-end=\"2826\"\u003eExpanding on the original amp design, the JCM 800 module provides additional flexibility with two key features\u003c\/p\u003e\n\u003cp data-start=\"2828\" data-end=\"3103\"\u003eBright Switch\u003cbr data-start=\"2841\" data-end=\"2844\"\u003eA three position toggle switch selects between two bright cap values or removes it entirely. This lets you tailor the attack and clarity of the preamp stage from tight and biting to warm and smooth. It is similar to modifying the bright cap on a vintage 2203.\u003c\/p\u003e\n\u003cp data-start=\"3105\" data-end=\"3339\"\u003eHigh Low Input Switch\u003cbr data-start=\"3126\" data-end=\"3129\"\u003eReplicates the dual input jacks found on the original JCM 800, toggling between the high gain Lead input and the lower gain Normal input. This lets you move from punchy classic crunch to saturated modern drive.\u003c\/p\u003e\n\u003cp data-start=\"3341\" data-end=\"3368\"\u003e\u003cstrong data-start=\"3341\" data-end=\"3368\"\u003eCATHODE SELECT FUNCTION\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"3370\" data-end=\"3749\"\u003eThe Marshall JCM 800 module features a three position switch on the PCB, which allows you to configure the input tube bass response to match the original circuit of the selected module. These settings affect the feel and tightness. Each amp designer has a specific combination of components that make up their input tube circuit. Three combinations are available with this switch\u003c\/p\u003e\n\u003cp data-start=\"3751\" data-end=\"3886\"\u003ePosition 1 1.5K resistor and 22uF capacitor\u003cbr data-start=\"3794\" data-end=\"3797\"\u003ePosition 2 2.7K resistor and .68uF capacitor\u003cbr data-start=\"3841\" data-end=\"3844\"\u003ePosition 3 1.8K resistor and 1uF capacitor\u003c\/p\u003e\n\u003cp data-start=\"3888\" data-end=\"3974\"\u003eThe JCM 800 module is preset to the center position 2.7K resistor and .68uF capacitor.\u003c\/p\u003e\n\u003cp data-start=\"3976\" data-end=\"4051\"\u003eSynergy hardware and interchangeable preamps are protected under US patent.\u003c\/p\u003e\n\u003cp data-start=\"4053\" data-end=\"4203\"\u003eThe JCM800 module will only work in SYNERGY hosts SYN 1 SYN 2 SYN 20IR SYN 30 SYN 50\u003cbr data-start=\"4137\" data-end=\"4140\"\u003eIT WILL NOT WORK IN ANY OTHER HARDWARE FROM OTHER MANUFACTURERS\u003c\/p\u003e\n\u003cp data-start=\"4205\" data-end=\"4244\"\u003e\u003cstrong data-start=\"4205\" data-end=\"4244\"\u003eMARSHALL THREE TUBE MODULE FEATURES\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"4246\" data-end=\"4864\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e• Authentic three tube preamp based on the Marshall JCM 800 2203 and 2204 vertical input\u003cbr data-start=\"4334\" data-end=\"4337\"\u003e• 3 x 12AX7 preamp tubes for full harmonic complexity and dynamic response\u003cbr data-start=\"4411\" data-end=\"4414\"\u003e• Built in 0 watt power amp and phase inverter for amp like feel\u003cbr data-start=\"4478\" data-end=\"4481\"\u003e• Two identical channels each with Preamp Bass Middle Treble Presence\u003cbr data-start=\"4550\" data-end=\"4553\"\u003e• Independent Master Volumes for rhythm and lead\u003cbr data-start=\"4601\" data-end=\"4604\"\u003e• Bright switch three position adjusts bright cap value for tone shaping\u003cbr data-start=\"4676\" data-end=\"4679\"\u003e• High Low Input switch replicates original JCM 800 input behavior\u003cbr data-start=\"4745\" data-end=\"4748\"\u003e• Cathode Select switch on PCB for adjustable tube response\u003cbr data-start=\"4807\" data-end=\"4810\"\u003e• Easy to install and remove from Synergy preamp docks\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"z-0 flex min-h-[46px] justify-start\"\u003e \u003c\/div\u003e\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\n\u003cdiv class=\"text-center\"\u003e \u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pointer-events-none h-px w-px absolute bottom-0\" aria-hidden=\"true\" data-edge=\"true\"\u003e \u003c\/div\u003e","brand":"Synergy","offers":[{"title":"Default Title","offer_id":52576286605621,"sku":"Synergy-Marshall JCM800 Module-NEW","price":449.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0532\/9839\/7369\/files\/189330.jpg?v=1776346728"},{"product_id":"synergy-marshall-jcm800-module-open-box","title":"Synergy Marshall JCM800 Module (Open Box)","description":"\u003cdiv class=\"flex flex-col text-sm pb-25\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:b0e795bd-9108-4e31-8e1e-381f0f64695a-3\" data-testid=\"conversation-turn-6\" data-scroll-anchor=\"true\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" dir=\"auto\" tabindex=\"0\" data-message-author-role=\"assistant\" data-message-id=\"40054b99-68f6-45fa-b558-3916827b6890\" data-message-model-slug=\"gpt-5-3\" data-turn-start-message=\"true\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert w-full wrap-break-word light markdown-new-styling\"\u003e\n\u003cp data-start=\"0\" data-end=\"20\"\u003e\u003cstrong data-start=\"0\" data-end=\"20\"\u003eMARSHALL JCM 800\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"22\" data-end=\"470\"\u003eFew amplifiers have achieved the near mythic status of the Marshall JCM 800. When it first roared to life in the early 1980s, it did not just define an era it ignited it. Kicking off a new generation of tones, the JCM 800 became the definitive voice of hard rock and heavy metal. Big, aggressive, and unmistakably British. It took the foundational crunch of the Plexi and added the gain, punch, and focus that powered a generation of guitar heroes.\u003c\/p\u003e\n\u003cp data-start=\"472\" data-end=\"830\"\u003eMarshall JCM 800 2203 100W and 2204 50W circuits, with their single channel, cascaded gain stages, and signature midrange roar, delivered a level of authority and articulation that set them apart from anything before or since. It was the perfect balance of power and precision. For countless players, the JCM 800 is not just an amplifier it is the amplifier.\u003c\/p\u003e\n\u003cp data-start=\"832\" data-end=\"1350\"\u003eNow, Synergy and Marshall have teamed up once again to bring you, for the first time ever, this legend in a three tube, dual channel preamp module. Utilizing Marshall’s original circuit design, the JCM 800 module delivers the raw energy, attack, and articulate overdrive of the iconic vertical input 2203 and 2204 amplifiers. Whether you are chasing the three dimensional crunch of 80s rock or crushing tight gain for modern metal, the JCM 800 module gives you the legendary tonal experience that defined a generation.\u003c\/p\u003e\n\u003cp data-start=\"1352\" data-end=\"1386\"\u003e\u003cstrong data-start=\"1352\" data-end=\"1386\"\u003eDUAL CHANNEL THREE TUBE PREAMP\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1388\" data-end=\"1888\"\u003eEach of the JCM 800’s two identical channels feature independent Preamp, Bass, Middle, Treble, Presence, and Volume controls, giving you complete command over your gain structure and tonal response. From dynamic low gain crunch to saturated high gain sustain, the JCM 800 module delivers every nuance of the original amp’s voice. Independent Master Volume controls for each channel allow you to precisely balance rhythm and lead levels with all of the amp’s dynamic character and harmonic complexity.\u003c\/p\u003e\n\u003cp data-start=\"1890\" data-end=\"1942\"\u003e\u003cstrong data-start=\"1890\" data-end=\"1942\"\u003eTHREE TUBE MODULE WITH BUILT IN 0 WATT POWER AMP\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1944\" data-end=\"2033\"\u003eThe JCM 800 module introduces Synergy’s three tube architecture in modular preamp design.\u003c\/p\u003e\n\u003cp data-start=\"2035\" data-end=\"2501\"\u003eBeloved by generations of players, the original JCM 800 truly came alive when cranked, thanks to the interplay between its preamp and power amp stages. Synergy has now captured that same raw energy and unmistakable feel in a compact, modular form. Two 12AX7s drive the preamp, while a third 12AX7 powers the built in 0 watt amplifier and phase inverter. With the JCM 800 module you get the sag, feel, and harmonic bloom of a fully cranked JCM 800 head at any volume.\u003c\/p\u003e\n\u003cp data-start=\"2503\" data-end=\"2674\"\u003eThe JCM 800 module delivers the authority, grit, and edge that made this amp an icon in rock history, while propelling Synergy’s modular platform into new sonic territory.\u003c\/p\u003e\n\u003cp data-start=\"2676\" data-end=\"2714\"\u003e\u003cstrong data-start=\"2676\" data-end=\"2714\"\u003eBRIGHT AND HIGH LOW INPUT SWITCHES\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"2716\" data-end=\"2826\"\u003eExpanding on the original amp design, the JCM 800 module provides additional flexibility with two key features\u003c\/p\u003e\n\u003cp data-start=\"2828\" data-end=\"3103\"\u003eBright Switch\u003cbr data-start=\"2841\" data-end=\"2844\"\u003eA three position toggle switch selects between two bright cap values or removes it entirely. This lets you tailor the attack and clarity of the preamp stage from tight and biting to warm and smooth. It is similar to modifying the bright cap on a vintage 2203.\u003c\/p\u003e\n\u003cp data-start=\"3105\" data-end=\"3339\"\u003eHigh Low Input Switch\u003cbr data-start=\"3126\" data-end=\"3129\"\u003eReplicates the dual input jacks found on the original JCM 800, toggling between the high gain Lead input and the lower gain Normal input. This lets you move from punchy classic crunch to saturated modern drive.\u003c\/p\u003e\n\u003cp data-start=\"3341\" data-end=\"3368\"\u003e\u003cstrong data-start=\"3341\" data-end=\"3368\"\u003eCATHODE SELECT FUNCTION\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"3370\" data-end=\"3749\"\u003eThe Marshall JCM 800 module features a three position switch on the PCB, which allows you to configure the input tube bass response to match the original circuit of the selected module. These settings affect the feel and tightness. Each amp designer has a specific combination of components that make up their input tube circuit. Three combinations are available with this switch\u003c\/p\u003e\n\u003cp data-start=\"3751\" data-end=\"3886\"\u003ePosition 1 1.5K resistor and 22uF capacitor\u003cbr data-start=\"3794\" data-end=\"3797\"\u003ePosition 2 2.7K resistor and .68uF capacitor\u003cbr data-start=\"3841\" data-end=\"3844\"\u003ePosition 3 1.8K resistor and 1uF capacitor\u003c\/p\u003e\n\u003cp data-start=\"3888\" data-end=\"3974\"\u003eThe JCM 800 module is preset to the center position 2.7K resistor and .68uF capacitor.\u003c\/p\u003e\n\u003cp data-start=\"3976\" data-end=\"4051\"\u003eSynergy hardware and interchangeable preamps are protected under US patent.\u003c\/p\u003e\n\u003cp data-start=\"4053\" data-end=\"4203\"\u003eThe JCM800 module will only work in SYNERGY hosts SYN 1 SYN 2 SYN 20IR SYN 30 SYN 50\u003cbr data-start=\"4137\" data-end=\"4140\"\u003eIT WILL NOT WORK IN ANY OTHER HARDWARE FROM OTHER MANUFACTURERS\u003c\/p\u003e\n\u003cp data-start=\"4205\" data-end=\"4244\"\u003e\u003cstrong data-start=\"4205\" data-end=\"4244\"\u003eMARSHALL THREE TUBE MODULE FEATURES\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"4246\" data-end=\"4864\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e• Authentic three tube preamp based on the Marshall JCM 800 2203 and 2204 vertical input\u003cbr data-start=\"4334\" data-end=\"4337\"\u003e• 3 x 12AX7 preamp tubes for full harmonic complexity and dynamic response\u003cbr data-start=\"4411\" data-end=\"4414\"\u003e• Built in 0 watt power amp and phase inverter for amp like feel\u003cbr data-start=\"4478\" data-end=\"4481\"\u003e• Two identical channels each with Preamp Bass Middle Treble Presence\u003cbr data-start=\"4550\" data-end=\"4553\"\u003e• Independent Master Volumes for rhythm and lead\u003cbr data-start=\"4601\" data-end=\"4604\"\u003e• Bright switch three position adjusts bright cap value for tone shaping\u003cbr data-start=\"4676\" data-end=\"4679\"\u003e• High Low Input switch replicates original JCM 800 input behavior\u003cbr data-start=\"4745\" data-end=\"4748\"\u003e• Cathode Select switch on PCB for adjustable tube response\u003cbr data-start=\"4807\" data-end=\"4810\"\u003e• Easy to install and remove from Synergy preamp docks\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"z-0 flex min-h-[46px] justify-start\"\u003e \u003c\/div\u003e\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\n\u003cdiv class=\"text-center\"\u003e \u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pointer-events-none h-px w-px absolute bottom-0\" aria-hidden=\"true\" data-edge=\"true\"\u003e \u003c\/div\u003e","brand":"Synergy","offers":[{"title":"Default Title","offer_id":52990577246517,"sku":"Synergy-Marshall JCM800 Module-FU","price":383.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0532\/9839\/7369\/files\/189330_7e0750ab-2354-4925-a079-95eed531d9a8.jpg?v=1781209984"},{"product_id":"synergy-rd-tube-preamp-module","title":"Synergy RD Tube Preamp Module","description":"\u003cp\u003e\u003cstrong\u003eSYNERGY RD\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBRITISH FLAVORED PREAMP MODULE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTwo distinct shades of British gain. Two identical, fully independent channels. One remarkably flexible all-tube module.\u003c\/p\u003e\n\u003cp\u003eSome amplifier designs are recognized as much by their sound as by their unmistakable color. The Synergy RD module captures two of the most revered British high-gain voices ever created, delivering everything from muscular rock crunch to thick, saturated modern gain.\u003c\/p\u003e\n\u003cp\u003eDesigned for Synergy's all-tube modular preamp system, the RD features two identical channels, each capable of delivering two distinct British gain personalities. Whether you're chasing articulate hard rock rhythm tones, crushing modern metal, or soaring lead sounds, the RD delivers the signature grind, punch, and harmonic richness that have made these circuits favorites on stages and in studios around the world.\u003c\/p\u003e\n\u003cp\u003eLike every Synergy module, the RD is engineered to capture not only the tone, but the feel, touch sensitivity and responsiveness that inspire players every time they plug in.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eROCK AND DARK BRITISH VOICES\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIn ROCK mode, the RD delivers the instantly recognizable voice of a modern British rock amplifier — tight, aggressive and remarkably articulate. From thick classic rock crunch to singing lead tones, it offers exceptional note definition while retaining the bold midrange punch and authority that have made this style of amplifier a modern favorite.\u003c\/p\u003e\n\u003cp\u003eIn DARK mode the RD transforms into an entirely different beast. The gain structure becomes thicker, darker and more saturated, with a heavier low end and a more compressed feel that's equally at home delivering crushing rhythm tones, doom-inspired textures and fluid, sustaining lead tones.\u003c\/p\u003e\n\u003cp\u003eEach channel features a three-position Bright switch, allowing you to fine-tune the high-frequency response. Whether you need extra bite, a smoother response or something in between, the Bright switch makes dialing in the perfect top end quick and intuitive.\u003c\/p\u003e\n\u003cp\u003eIndependent Gain, Bass, Middle, Treble and Volume controls on both channels provide complete tonal flexibility. Because each channel is completely independent, the RD can function like two amplifiers in one. Dial in complementary rhythm and lead sounds, create vintage and modern variations of the same voice or build entirely different gain structures that are instantly available at the flip of a switch.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCATHODE SELECT FUNCTION\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe input tube's cathode circuit determines how much low end reaches the gain stages.\u003c\/p\u003e\n\u003cp\u003ePosition 1 – 1.5K resistor, 22uF capacitor. The fullest and loosest. The entire low end reaches the gain stages for maximum weight, a softer attack, and more bloom under saturation.\u003cbr\u003e\nPosition 2 – 2.7K resistor, .68uF capacitor. The tightest and most focused. Low end is trimmed before the gain stages, firming up the pick attack and keeping palm mutes articulate at high gain. Factory setting.\u003cbr\u003e\nPosition 3 – 1.8K resistor, 1uF capacitor. The middle ground. More body than position 2, without the looseness of position 1.\u003c\/p\u003e\n\u003cp\u003eThere is no wrong answer. Try all three and use the one that feels best under your hands.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSYNERGY RD MODULE FEATURES\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e• Two distinct British high-gain voices (ROCK and DARK modes) per channel\u003cbr\u003e\n• Two identical, fully independent channels — function like two amplifiers in one\u003cbr\u003e\n• Independent Gain, Bass, Middle, Treble, and Volume controls per channel\u003cbr\u003e\n• Three-position Bright switch per channel for adjustable high-end response\u003cbr\u003e\n• Cathode Select switch on PCB for adjustable input tube bass response\u003cbr\u003e\n• Easy to install and remove from Synergy preamp docks\u003c\/p\u003e","brand":"Synergy","offers":[{"title":"Default Title","offer_id":53606405046581,"sku":"Synergy-Synergy RD-NEW","price":399.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0532\/9839\/7369\/files\/195198.jpg?v=1789760354"},{"product_id":"synergy-marshall-jmp-preamp-module","title":"Synergy Marshall JMP Preamp Module","description":"\u003cp\u003e\u003cstrong\u003eMARSHALL JMP\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFrom the moment rock 'n' roll exploded onto the scene, one name has been at the heart of its most electrifying moments – Marshall. For generations, Marshall amplifiers have defined the sound of the electric guitar, pushing music to new heights and shaping the very essence of modern rock. From the soaring blues-rock of Eric Clapton and the incendiary performances of Jimi Hendrix to the seismic riffs of Jimmy Page, Eddie Van Halen and Angus Young, Marshall's unmistakable roar has been the foundation of legendary tone.\u003c\/p\u003e\n\u003cp\u003eAt the core of this legacy stands the Marshall Plexi – an amplifier so iconic that it has remained a benchmark for tone since its introduction in the 1960s. Originally built to meet the demand for more power and volume, the Plexi starts with bold, sparkling cleans at lower settings, but as the volume is increased, it gradually transforms – first into a rich, overdriven bite and finally into the thick, harmonically rich distortion that became the voice of rock guitar. Whether it was the blues-infused crunch of the late '60s, the hard rock revolution of the '70s, the high-octane shredding of the '80s, or the grunge and alternative explosion of the '90s, the JMP remains the amp by which all others are judged.\u003c\/p\u003e\n\u003cp\u003eNow, Synergy and Marshall have joined forces to bring you the ultimate tribute to this legendary amplifier. Combining Synergy's cutting-edge patented modular technology with Marshall's historic circuit design, this new Synergy JMP preamp module delivers the unmistakable growl, touch sensitivity and dynamic response of a cranked JMP — at any volume. Whether on stage, in the studio, or at home, this is your chance to harness the sound that built rock 'n' roll. The legend continues.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDUAL-CHANNEL, TUBE PREAMP\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Marshall JMP module delivers the unmistakable tone and dynamic response of one of Marshall's most legendary amplifiers. Designed to recreate the raw power and harmonic complexity of the original non-master volume JMP, this module features two identical, independent channels, allowing you to dial in everything from bold, articulate cleans to rich, overdriven crunch and searing distortion.\u003c\/p\u003e\n\u003cp\u003eIndependent three-band EQ (Bass, Middle, Treble) offers the interactive tone shaping of the original JMP, while Volume 1 represents the brighter input and Volume 2 is the darker, “Normal” input. These controls work together to craft the perfect Marshall tone, with independent master volumes on each channel to precisely balance your levels.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eON-BOARD PHASE INVERTER — 0-WATT POWERAMP\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThink of this as our way of fitting an entire guitar amp into a preamp module. In a traditional amplifier, the preamp section shapes the tone and provides gain, while the poweramp delivers the volume, punch, and dynamic response that make a tube amp feel alive. To authentically recreate this experience, the JMP module incorporates a “0-watt poweramp” design, complete with a phase inverter and a small transformer. This innovative approach faithfully captures the harmonic complexity and dynamic response of a cranked Marshall poweramp, delivering the rich tone and feel of a full-sized amp — all within a compact all-tube module.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBRIGHT SWITCHES\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Bright switches — four in total — allow you to adjust the bright cap on each volume control. Simply put, the bright cap on a Marshall JMP influences how much high-end (treble) frequencies pass through the volume control, making the sound brighter and more aggressive. On a traditional JMP, this adjustment would require an amp tech, but the JMP module lets you customize the brightness of your Vol 1 and Vol 2 controls. By blending the two channels, you can mix the brightness of Volume 1 with the warmth of Volume 2 to achieve the perfect balance of attack and thickness.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCATHODE SELECT FUNCTION\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Marshall JMP module features a three-position switch on the PCB, which allows you to configure the input tube bass response to match the original circuit of the selected module. These settings affect the feel and tightness. Each amp designer has a specific combination of components that make up their input tube circuit. We have selected the three most popular combinations which you can access with this switch: position 1 (1.5K resistor and 22uF capacitor), position 2 (2.7K resistor and .68uF capacitor) and position 3 (1.8K resistor and 1uF capacitor). Of course, you can experiment and try any position to see which you prefer. The JMP module is preset to position 2 (2.7K resistor and .68uF capacitor).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMARSHALL JMP MODULE FEATURES\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e• Authentic dual-channel tube preamp based on the Marshall JMP non-master volume circuit\u003cbr\u003e\n• Two vintage-era voicing switches ('60s \/ '70s modes) for a rounder or tighter JMP tone\u003cbr\u003e\n• Independent Volume 1, Volume 2, and Master controls per channel\u003cbr\u003e\n• Independent Bass, Middle, and Treble per channel\u003cbr\u003e\n• Four Bright switches (one per Volume control) for adjustable high-end response\u003cbr\u003e\n• Built-in 0-watt poweramp with phase inverter and small transformer for true amp-in-a-box feel\u003cbr\u003e\n• Cathode Select switch on PCB for adjustable input tube bass response\u003cbr\u003e\n• Easy to install and remove from Synergy preamp docks\u003c\/p\u003e","brand":"Synergy","offers":[{"title":"Default Title","offer_id":53606534349109,"sku":"Synergy-Marshall JMP-NEW","price":399.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0532\/9839\/7369\/files\/195193.jpg?v=1789761195"}],"url":"https:\/\/crazydavesmusic.com\/collections\/synergy-amps.oembed","provider":"Crazy Dave's Music","version":"1.0","type":"link"}