Concert Fidelity CF 80 LSX2 version 3.5

For sale we have our Concert Fidelity CF 80 LSX2 version 3.5 linestage preamplifier. This is current and is one of the best sounding preamps we have had over the past 25  years. it ranks up there with Audio Note's upper level preamps like the M8 and right there with our Thrax Audio preamps as well.  this unit has been my own personal preamp and I sent it back to Concert Fidelity to have the latest and greatest updates done to it. I have fitted it with premium NOS tubes which really makes a big improvement in sound. it does have one very slight scratch in the top plate as shown in the picture. please not the scratch looks worse in the photo. but is not as noticable with the naked eye.   
it features advanced input circuitry and volume control circuitry are implemented with our proprietary Direct Signal Path Technology (DSPT). This combines with our low-distortion amplification section using the 12AU7 in cascode configuration to produce extremely fast transient response and clarity. This preamp is the closest thing to using no preamp at all, yet it provides sufficient gain to give music the drive and authority which no passive device can equal. Extraordinary resolution and immediacy from the shortest circuit path possible, implemented with our unique Direct Signal Path Technology. Unparalleled transparency and excellent channel separation from our proprietary minimalist dual electronic volume control. Lightning-fast transient response and crystalline clarity from our perfectionist low-distortion amplification section using the 12AU7 in cascode configuration. Perfectionist simplified and optimized circuitry allows the sound of the tubes themselves to emerge with unparalleled transparency―the meaning of the proverbial “straight wire with gain.” Quite simply, the closest thing to no preamp at all, but with drive and authority which no passive can approach.

－Specification－
Inputs: 4-Line Level Inputs (RCA)
Input Impedance: 100kohms
Outputs: 1-Line Level Output (RCA)
Gain: Selectable between 6dB and 12dB
Tube Complement: 12AU7 (2) for gain (tube-swapping possible), 6CA4 (1) for rectification
Others: Remote volume control
Power Reqiremants: (100VAC / 50~60Hz), 110-120VAC / 60Hz, (220-230VAC / 50Hz), (240VAC / 50Hz)
Dimensions: 450mm (W) X 100mm (H) X 310mm (D)
Net Weight: 8.5KG