IsoFormer™ UNO

Designed and hand-built (by Mario) in Canada.

• Single channel (mono) solution
• Premium^‡ CUSTOM transformer
• Converts unbalanced < > balanced
• Isolates amp simulator pedal output
• Isolates balanced/unbalanced signals
• Splitter for 2 amps, interface or mixer
• Eliminates ground loop hum and noise
• Long-Line Transmitter (up to 330ft./100m)
• 100% passive — no power supply required

Running two amps from a stereo pedal will normally result in unwanted ground loop hum and noise. Use the UNO between either the left / right output of the pedal and the input of one amp to immediately kill the ground loop, eliminating the hum and noise.

The UNO can split your signal between two amps, or one amp and an audio interface or mixer, without any ground loop hum and noise. And, the included PHASE push-button ensures that you'll never have a phase cancellation issue (which results in a sound that can be described as hollow, thin, not as loud and/or lacking low end or fullness).

For splitting to more^† than two amps, just use more of them, an UNO for each amp. Use a patch cable from the SPLIT output of one to the INPUT of another and connect the ISOLATED outputs to the input of each amp. Repeat the daisy-chain for more amps and use the THRU output of the last UNO to feed the input of an additional amp.

If you’re using an amp simulator pedal such as the Line 6 HX or Helix, Strymon Iridium, UA Dream, Lion, Ruby, or Woodrow, or the Walrus ACS1... then the UNO should be your first choice for both isolating and interfacing the sim, from and to, the front-of-house. Since the UNO is not a DI box, its balanced output signal is not padded (down), so less or no gain will be necessary at the console. Always play confidently knowing that the UNO's custom shielded transformer and its GROUND LIFT push-button ensures your tone will be at its absolute best and hum-free.

The buttons, input and output jacks are decisively arranged so that the UNO can serve as a pedalboard's output patch-box or interface. Also using an IsoFormer™ RCV in front of your amp, enables sending your guitar signal via a ¼" TRS balanced cable over extra long (up to 330ft./100m) distances with the best noise immunity possible; ensuring the tone reaching your distant amp is flawless and noise-free.

• Power Requirements: 100% passive
• Dimensions: 4.43 x 2.38 x 1.50in. / 112.5 x 60.5 x 38.1mm

User Manual

See our FAQ page for Axess' history with balanced guitar audio, Eddie Van Halen, and Jensen™ Transformers.

^† Multi-Amp Splitter

The number of UNOs that can be daisy-chained for splitting to multiple amplifiers depends on various factors, but a minimum of 2 to 4 (for 3 to 5 amps) is conceivable.

^‡ Premium CUSTOM Transformer

Similar in quality and specifications to the transformer used in our IsoFormer™ RCV, but designed specifically for applications involving output signals.