Fractal Audio Systems Axe-FX Ultra Preamp and Effects Processor Japan Used. Input Level: +16 dB (conditioned for guitar use) ■INPUT 2 [FX RTN] Connector: 2 x phone jack, unbalanced. Connectors: OUT 2 [FX SEND]: 2 x 1/4" phone jack unbalanced (HumbusterTM hum-canceling type).
eBay