The DSM & Humboldt Electronics Sub-Atomic X-Over Cmos Bass Preamp is a Dsm Humboldt Electronics preamp pedal, currently around $258.32. Close alternatives include the Ashdown James LoMenzo Mega Drive and the Carl Martin Bass Drive. It pairs well with the Nobels ODR-1 and the Walrus Audio Eons.
DSM & Humboldt Electronics Sub-Atomic X-Over Cmos Bass Preamp
Dsm Humboldt Electronics · pedal
The DSM and Humboldt Electronics Sub-Atomic X-Over CMOS Bass Preamp is a dedicated bass crossover preamp pedal using CMOS circuitry to split the bass signal into high and low frequency bands, processing them independently for separate drive and tone shaping. The crossover design allows overdrive to be applied to the high-frequency content while the low-frequency fundamental remains clean, preserving bass definition and punch while adding harmonic distortion character to the upper frequencies. Made by DSM and Humboldt Electronics for professional bass applications.
- bass
- frequency
- fundamental
- preamp
- overdrive
- definition
- drive
- clean
Price updated Aug 27, 2026
Genres the DSM & Humboldt Electronics Sub-Atomic X-Over Cmos Bass Preamp is commonly used in
- Electronic
- Metal
- Rock
- Experimental
- Alternative
cited
Inferred from shared tonal signals, not a stated genre tag. - Blues
cited
Inferred from shared tonal signals, not a stated genre tag.
Pedals that stack with the DSM & Humboldt Electronics Sub-Atomic X-Over Cmos Bass Preamp
Nobels ODR-1
Nobels
25% matchNobels ODR-1's own full character is the real reason this is worth trying
Walrus Audio Eons
Walrus Audio
24% matchInto a transparent tone, Walrus Audio Eons brings the low gain it's missing
MXR ZW90 Wylde Phase
MXR
18% matchKeep MXR ZW90 Wylde Phase after DSM & Humboldt Electronics Sub-Atomic X-Over Cmos Bass Preamp in the signal chain, clear of DSM & Humboldt Electronics Sub-Atomic X-Over Cmos Bass Preamp's own gain stage
Electro-Harmonix Pico Platform
Electro-Harmonix
15% matchWhat Electro-Harmonix Pico Platform brings here leans toward compressed — that's worth building a pairing around
Walrus Audio Fable
Walrus Audio
14% matchPut Walrus Audio Fable after DSM & Humboldt Electronics Sub-Atomic X-Over Cmos Bass Preamp in the signal chain, clear of DSM & Humboldt Electronics Sub-Atomic X-Over Cmos Bass Preamp's own gain stage — goes in the amp's FX loop (or last, into a clean amp)
T-Rex Reptile Delay
T Rex
9% matchT-Rex Reptile Delay's modulated voice goes after DSM & Humboldt Electronics Sub-Atomic X-Over Cmos Bass Preamp in the signal chain — it's not there to compete with DSM & Humboldt Electronics Sub-Atomic X-Over Cmos Bass Preamp's own transparent character — goes in the amp's FX loop (or last, into a clean amp)
Boss OD-3 Overdrive
Boss
tonal matchBoss OD-3 Overdrive is voiced for a clean amp's front end — DSM & Humboldt Electronics Sub-Atomic X-Over Cmos Bass Preamp gives it exactly that
Tone City Dry Martini
Tone City
tonal matchInto DSM & Humboldt Electronics Sub-Atomic X-Over Cmos Bass Preamp, Tone City Dry Martini is right at home: it's built around a clean amp's front end
Cheaper alternatives
Electro-Harmonix Nano Operation Overlord
Electro-Harmonix
71% similarityShared character: definition, mix, distortion
Ashdown Triple Shot
Ashdown
70% similarityShared character: definition, mix, bass
Boss BB-1X
Boss
69% similarityShared character: standout, mix, bass
Ampeg Classic Analog Bass Preamp pedal
Ampeg
68% similarityShared character: preamp, bass, metal
Electro-Harmonix Nano Battalion
Electro-Harmonix
95% similaritysimilar tone character
Ashdown James LoMenzo HyperDrive
Ashdown
95% similaritysimilar tone character
Boutique & premium upgrades
Similar charactersee all similar tone character →
Ashdown James LoMenzo Mega Drive
Ashdown
72% similarityShared character: definition, punch, mix
Carl Martin Bass Drive
Carl Martin
69% similarityShared character: standout, punch, mix
Behringer BDI21
Behringer
68% similarityShared character: mix, preamp, bass
Aguilar Octamizer (Bass Octaver)
Aguilar
62% similarityShared character: bass
Source Audio SA250-US
Source Audio
61% similarityShared character: distortion, bass
EarthQuaker Devices Scrolls V1
EarthQuaker Devices
96% similaritysimilar tone character
Questions people ask
What are good alternatives to the DSM & Humboldt Electronics Sub-Atomic X-Over Cmos Bass Preamp?+
The closest matches in character are the Ashdown James LoMenzo Mega Drive, the Carl Martin Bass Drive, the Behringer BDI21. Budget picks: Electro-Harmonix Nano Operation Overlord, Ashdown Triple Shot, Boss BB-1X. Boutique upgrades: Orange Bass Butler Bi-Amp Bass Preamp.
What pairs well with the DSM & Humboldt Electronics Sub-Atomic X-Over Cmos Bass Preamp?+
Strong matches from rig and tone-complementarity evidence: Nobels ODR-1, Walrus Audio Eons, MXR ZW90 Wylde Phase — Nobels ODR-1's own full character is the real reason this is worth trying.
How much does the DSM & Humboldt Electronics Sub-Atomic X-Over Cmos Bass Preamp cost?+
Around $258.32 (live listing price, updated Aug 27, 2026).
Compare
- vs EarthQuaker Devices Scrolls V1
- vs Electro-Harmonix Nano Battalion
- vs Electronic Audio Experiments Greathammer Bass Driver