Source Audio SA 270 - One Series EQ2
Effect Pedal for Electric Guitar and Electric Bass

Latest User Reviews
Not for me...
The sound quality is not transparent enough for me on acoustic fingerstyle guitar.
The foot switch didnt always switch on the EQ and the software on my Mac was a bit flaky with values changing intermittently.
Its a shame as I really wanted an EQ that was MIDI controllable so I could easily switch EQ between guitars live.
Unit returned and I bought two Empress Para EQ Mk2 Deluxes instead which are very transparent. But no MIDI.... oh well.
A quality versatile device...
One Series EQ2 is a well-built, good-sounding equalizer, booster and tuner in one box. The price is not small, but the pedal is worth it. The fact that it can be adjusted for several instruments at the same time, and each preset has an A/B variation, which allows you to use it as a booster and save space on your pedalboard. If I lost it, I would buy it again...
Incredibly versatile
This pedal is a small jewel, takes 1 slot on my pedalboard but bringing the features of at least 3 pedals.
EQ (with possibility of managing everything on the pedal itself and not necessarily through an app), limiter, tuner, 2 separate channels that I use pre and post distortion, and 4 switchable slots to save your EQ curves. Also, you can build EQ filters and control them with an external expression pedal.
It is kinda expensive small little box, but well made (sturdy, compact) and definitely worth the money!
The best pedal Eq for live application
I've created a preset to eliminate some small issues of my 175 revealed in the recording studio. In live application this is fantastic, ampli flat and a good focused studio-like sound, no mud etc.
Encouraged by this experience I used this Eq in studio and perhaps I made a mistake here: the sound is detailed but a bit impoverished and harsh compared, for example, to the Neve 551 which remains sweet and rich in that application, although perhaps less precise. But these are fixations and maybe that's not its main field of use. Absolutely recommended.
Amazing control
If you’re in a cover band and you play songs with different bass sounds, this pedal takes care of all your EQ needs. …At the push of a switch.
It’s the perfect addition to any bass pedal board.
A must for a midi system
I was looking for a midi enabled EQ and wanted a small unit rather than some of the larger options.
I use this in the loop of my Mesa Boogie Triaxis, in place of the must hated 'Dynamic Voice'.
Having the ability to handle stereo options, means I have a different EQ set left and right.
As I change programs on my amp, this unit also changes.
The other important consideration, is this unit can connect to my Mac. I found it really easy, to set the EQ per channel by ear, using the computer whilst I played in each section of each song in my band.
Had to get in touch with Source Audio for a few minor things. Their service was outstanding - extremely helpful. That, for me, is also a BIG consideration. You find out how good any seller or manufacturer is, when you have to contact them for assistance.
Highly recommend this unit.
Technical Data
- Manufactured by Source Audio
- Released in 2020
- Average price : $365
- 10-Band equalizer
- 10 Editable frequency bands from 31 Hz to 16 kHz with +/- 18 dB boost/cut per band
- Parametric control options change frequency range or Q-factor
- 4 onboard presets - or 8 in preset extension mode
- 128 MIDI presets
- Additional, adjustable +12 dB clean boost
- Completely MIDI-capable
- External expression and switching control
- Integrated noise gate, limiter and tuner
- Output and control knobs for EQ parameters
- Select/Save button
- Status LEDs
- Universal bypass
- Selectable between analogue-buffered or relay-switched true bypass
- 2 x 6.3 mm TRS stereo jack inputs
- 2 x 6.3 mm TRS stereo jack outputs
- MIDI IN and MIDI THRU connections
- Mini USB port for connection to PC (Windows and Mac compatible) and remote control (MIDI)
- 3.5 mm source audio control input for connection to compatible source audio devices (dual expression pedal, tap switch)
- Power supply via 9V DC (SR SA 153) power supply with 2.1 x 5.5 mm barrel connector, polarity (-) inside
- Power consumption: 165 mA
- Housing made of brushed anodised aluminium
- Dimensions (L x W x H): 114 x 70 x 51 mm
- Incldues power supply unit
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