3The Studio-X SQ AmplifiersWith the new Studio X SQ you get the sound quality that other companiesoffer only in their big competition amps (and better than many of them) in acompact chassis with 65W RMS/Channel @ 4Ω and 95W RMS/channel @ 2Ω(100W/Ch. @ 4Ω and 150W/Ch. @ 2Ω for the ST-6X SQ). You also get plenty offeatures, like 12dB/octave multi-function crossovers, bass boost, variable gainand even pass-through RCA outputs so you can daisy chain amps.As for performance, the Studio X SQ give you more than power. These ampshave 0.2% THD+noise, over 90dB signal to noise, over 60dB separation, andproduce power from 15Hz to 30kHz.Main features of the Studio-X SQ amplifiersTiffany style Panel Mount RCA SQ Upgrades: Op-amps, Caps, Etc.• Full Range, Class A/B• SQ Upgrades: Op-amps, Caps, Etc.• Tiffany style Panel Mount RCA• RCA and Speaker Level Inputs• Variable input gain control• Variable electronic crossover• Auto-on with Speaker level inputs• Variable bass boost control• THD @ Rated Power < 0.5%• Signal to Noise Ratio > 90dB• Channel Separation > 60dB• 65 watts/Ch. 4Ω (100 watts, ST-6X SQ)• 95 watts/Ch. 2Ω (150 watts, ST-6X SQ)• Frequency Response 15Hz to 30KHz ±1dB• ST-2X SQ Dimensions:Chassis 160(W) x 52(H) x 154(L)Overall 160(W) x 52(H) x 180(L)• ST-4X SQ Dimensions:Chassis 160(W) x 52(H) x 282(L)Overall 160(W) x 52(H) x 320(L)• ST-6X SQ Dimensions:Chassis 160(W) x 52(H) x 452(L)Overall 160(W) x 52(H) x 488(L)