The INDY Series Bass Guitar Amps feature Hybrid Circuitry Design, combining a Class A tube preamp with a Class D power amp. This hybrid technology succeeds in amalgamating a tube type bass amp with high power output, while reducing the amps weight by eliminating heavy weighted transformers in the power amp stage without sacrificing the amps tone. The built-in tube type compressor that’s featured in all models guarantees touch-controlled dynamics and remarkable sustain when desired. The intuitive control panel features a 3 band EQ (Bass, Middle, Treble) and bass and treble boost switches to provide the electric bassist with maximum tone variation and personalization. • Mono or multi channel operation, user programmable Midi presets & midi footswitch controllable presets • EQ section: Bass-Middle Treble, treble boost switch, bass boost switch • Built in Tube type Compressor circuitry • Post -preamp effect loop • D.I. out with custom wound audio transformer for Lo-z balanced connection to mixer/recording purposes without sacrificing tone • Hybrid Design: Class A tube preamp with Class D power amp • Class A preamp with 2 x 12AX7 tubes • 400WRMS Class D power amp • 1 x 15” JENSEN custom ceramic magnet woofer & 1 x 1” HF compression driver • 13 ply poplar plywood cabinet • Single channel with Bass, Middle, Treble EQ and Tube Compressor • Effect loop in series configuration • D.I. out with Lo-z balanced audio transformer, pre/post EQ selectable • Compressor and EQ on/off controllable via footswitch pedal