The Synergy Friedman DS Module is a Synergy amplifier, currently around $399.99. Close alternatives include the Strymon Iridium and the Friedman IR-J Jake E. Lee Preamp. It pairs well with the Browne Amplification Gritador and the Friedman BE-OD.
Synergy Friedman DS Module
Synergy · amplifier
The Synergy Friedman DS Module is a two-channel all-tube preamp cartridge for the Synergy modular system, voiced after Friedman's Dirty Shirley circuit. Friedman's reputation rests on hot-rodded British voicings, and the Dirty Shirley in particular is a lower-gain, more classic-rock-oriented design than the brand's higher-gain amplifiers. Fitted to a Synergy head it turns that chassis into a Friedman preamp without a separate amplifier. It suits classic and hard rock players building a modular rig.
What stands out
“Fitted to a Synergy head it turns that chassis into a Friedman preamp”
— from the listing
“s dirty shirley circuit”
— from the listing
“It suits classic and hard rock players building a modular rig”
— from the listing
“An authentic tube-preamp recreation of the Friedman Dirty Shirley, a warm, dynamic plexi-flavored overdrive amp, delivering that amplifier's genuine voicing, gain structure, and dynamic feel through real valve circuitry in a swappable modul…”
— from the reviews
“Its strengths are the faithful tube voicing, the feel, and the modular convenience; the caveats are the need for a Synergy dock or rackmount to use it and a single-amp focus per module”
— from the community notes
- dirty
- legendary tone
- dynamic
- classic rock
- feel
- hard rock
- british
Price updated Oct 24, 2026
Genres the Synergy Friedman DS Module is commonly used in
- Hard Rock
- Classic Rock
Pedals that stack with the Synergy Friedman DS Module
Browne Amplification Gritador
Browne Amplification
24% matchpushes an already-dirty tonePushes an already-dirty tone harder and tightens it up. (high gain → mid-forward)
Browne Amplification Gritador pushes a high gain tone toward mid-forward
Goes in front of the amp
Friedman BE-OD
Friedman
22% matchpushes an already-dirty tonePushes an already-dirty tone harder and tightens it up. (high gain → tight)
Stack Friedman BE-OD on top and a high gain tone tightens toward tight
Goes in front of the amp
Catalinbread RAH
Catalinbread
22% matchpushes an already-dirty tonePushes an already-dirty tone harder and tightens it up. (high gain → mid-forward)
Catalinbread RAH takes that high gain character and pushes it toward mid-forward
Goes in front of the amp
Electro-Harmonix Deluxe Electric Mistress
Electro-Harmonix
17% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor. (high gain → shimmer)
Electro-Harmonix Deluxe Electric Mistress's shimmer voice goes after Synergy Friedman DS Module in the signal chain — it's not there to compete with Synergy Friedman DS Module's own dynamic character
Goes in front of the amp
Hungry Robot Moby Dick V2
Hungry Robot
15% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor. (high gain → lush)
Put Hungry Robot Moby Dick V2 in Synergy Friedman DS Module's effects loop, clear of Synergy Friedman DS Module's own gain stage — goes in the amp's FX loop (or last, into a clean amp)
Sits in the amp's effects loop
Hungry Robot The Borderland
Hungry Robot
15% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor. (high gain → modulated)
Run Hungry Robot The Borderland in Synergy Friedman DS Module's effects loop, clear of Synergy Friedman DS Module's own gain stage — goes in the amp's FX loop (or last, into a clean amp)
Sits in the amp's effects loop
Origin Effects Cali76 V2 FET Compressor
Origin Effects
14% matchshapes the dynamic responseShapes how the tone responds to picking dynamics rather than its frequency or gain.
Origin Effects Cali76 V2 FET Compressor's own tight character is the real reason this is worth trying
Goes in front of the amp
Bogner Ecstasy Blue Mini Overdrive
Bogner
tonal matchGoes in front of the amp
Bogner Ecstasy Blue Mini Overdrive's own voicing points at Marshall-style amps, and Synergy Friedman DS Module delivers it
Cheaper alternatives
Boutique & premium upgrades
Similar character
Strymon Iridium
Strymon
72% similarityStrymon Iridium recreates this amp's tone in pedal form
Friedman IR-J Jake E. Lee Preamp
Friedman
72% similarityFriedman IR-J Jake E. Lee Preamp recreates this amp's tone in pedal form
Friedman IR-D
Friedman
72% similarityFriedman IR-D recreates this amp's tone in pedal form
Synergy Engl Savage Module
Synergy
65% similarityShared character: classic tones, need
Fender Concert (Rivera Era)
amplifier
53% similaritySimilar voicing: high gain, dynamic
Victory Amplifiers V30 The Countess
Victory
50% similaritySimilar voicing: high gain, dynamic
See all alternatives to the Synergy Friedman DS Module (cheaper + boutique) →
Questions people ask
What are good alternatives to the Synergy Friedman DS Module?+
The closest matches in character are the Strymon Iridium, the Friedman IR-J Jake E. Lee Preamp, the Friedman IR-D. Budget picks: Soldano SLO. Boutique upgrades: Mesa/Boogie Studio Preamp.
What pairs well with the Synergy Friedman DS Module?+
Strong matches from rig and tone-complementarity evidence: Browne Amplification Gritador, Friedman BE-OD, Catalinbread RAH — Browne Amplification Gritador pushes a high gain tone toward mid-forward.
How much does the Synergy Friedman DS Module cost?+
Around $399.99 (live listing price, updated Oct 24, 2026).