Detail 01
three-position bright switch
it adjusts attack and clarity.
Product detailSKU #1500000479269
SynergyMarshall JCM 800 Dual-Channel Tube Preamp Module
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Independent shopping perspective
The Korena take
built for the synergy modular preamp system, this jcm 800 cartridge brings marshall 2203 and 2204 circuit design into a compact dual-channel format. each identical channel has separate preamp, bass, middle, treble, presence, and master-volume controls, so rhythm and lead levels can be set independently. two 12ax7 preamp tubes work with a third 12ax7 for the built-in 0-watt power amp and phase inverter. bright, high/low input, and cathode-select switches add further control over attack, gain, and input-tube response.
Strong match
Who this is for
- setting separate rhythm and lead sounds with independent channel eq and master volumes
- adding jcm 800 2203 or 2204 circuit design to a compatible synergy host
- installing a module in a synergy dock without tools
Consider the trade-offs
When to look elsewhere
- use as a stand-alone preamp, because it requires a compatible synergy host device
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
high/low input toggle
it offers higher-gain and lower-gain input options.
Detail 03
three-position pcb cathode-select switch
it adjusts input-tube response and low-frequency response.
Final check
Know before you order
- 01a compatible synergy host is required: syn-1, syn-2, syn-20ir, syn-30, or syn-50.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01how many tubes are installed?
it uses three 12ax7 tubes: two in the preamp section and one for the 0-watt power amp and phase inverter.
02can it operate on its own?
no. it needs a compatible synergy host device.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
1 detailsSound
- EQ
- Independent per channel
5 detailsPickups & controls
- Bright Switch
- Three-position
- Circuit Design
- Marshall JCM 800 2203 and 2204
- Preamp Controls
- Preamp, bass, middle, treble, presence
- Input Switch
- High and low input toggle
- Preamp Tubes
- 2 x 12AX7
1 detailsBody & build
- Country of Origin
- United States
3 detailsConnections & power
- Power Amp
- Built-in 0-watt power amp
- Power Amp Tube
- 1 x 12AX7
- Supported Hosts
- SYN-1, SYN-2, SYN-20IR, SYN-30, SYN-50
10 detailsOther
- Format
- Modular preamp cartridge
- Channel Volume
- Independent master volume per channel
- Platform
- Synergy modular preamp system
- Designed in Collaboration with
- Marshall Amplification
- Phase Inverter
- Built-in
- Product Type
- Tube preamp module
- Cathode Select
- Three-position PCB switch
- Installation
- Tool-free Synergy dock installation
- Channel Configuration
- Dual identical channels
- Architecture
- Three-tube design
