Don't worry, you haven't missed it as it doesn't actually exist but maybe try and allow your self to imagine it for a minute... It's basically a Fusion 550... but... ...minus the second channel feature. ...minus the motorized controls. ...minus the bi-amp functionality. Just that lovely 3x12AX7 preamp and it's beautiful 500 watts Class-H power section. That unit, in 2 HU 19" rack format and I'd be set for the rest of my life. What about you? Would you consider buying it?