Detail 01
Top channel has more gain
The two channels can be assigned to lower-grit and more driven settings without matching gain ranges.
Product detailSKU #1500000229878
SynergyFriedman DS Tube Preamp Module
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Independent shopping perspective
The Korena take
The Friedman DS module brings the Dirty Shirley approach into a two-channel layout designed by Dave Friedman. Its channels are not identical: the top channel carries more gain, making it practical to keep one side at a lower-grit setting while the other is set up for a more driven lead part. Each channel has gain, volume, and a bright switch; both work through one shared three-band EQ. Two 12AX7 tubes provide the preamp section, while the Cathode Select switch lets you alter input-tube bass response, feel, and tightness.
Strong match
Who this is for
- Keeping a lower-grit sound and a more driven lead setup available on separate channels.
- Adjusting brightness independently for two guitars or two channel settings.
Consider the trade-offs
When to look elsewhere
- Players who require independent three-band EQ controls on both channels.
- Players seeking equal gain ranges from the module’s two channels.
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
Bright switch on each channel
Brightness can be set independently for each channel.
Detail 03
Dimensions: 6.5 x 2.28 x 5.51 inches
Use these measurements when planning physical space for the module.
Detail 04
Cathode Select switch
It changes the input tube’s bass response, feel, and tightness; the factory setting is position 1.
Final check
Know before you order
- 01The channels share one three-band EQ.
- 02The top channel has more gain than the bottom channel.
- 03The module is preset to Cathode Select position 1 (2.7K resistor and .68uf capacitor).
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Which DS channel has more gain?
The top channel has more gain than the bottom channel.
02Does each channel have a bright switch?
Yes. Both channels have their own bright switch.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
2 detailsSize & weight
- Dimensions Wxhxd
- 6.5 inch x 2.28 inch x 5.51 inch
- Weight
- 1.54
