Further Information
Musical Fidelity is renowned for their high end amps. And the KW series was one of the best!
This is the Hybrid version of their KW preamp, containing metalized MuVista tubes, that have an almost indefinite lifetime. Fab review in Stereophile:
"Preamp or small power amp?
With its output of more than 62V RMS peak and 4.5 amps, the kW is capable of producing nearly 20W RMS into 8 ohms—not that you'll want to, or be able to use the kW Hybrid as a power amp. In practical terms, these numbers mean that it will be virtually impossible to overdrive the kW. With a claimed line input impedance of 500k ohms and an output impedance of less than 0.5 ohm, the kW presents sources with an easy load to drive and offers similar ease to the accompanying power amplifier. Like the kW750, the kW Hybrid is single-ended only.
The kW's low-feedback hybrid circuit includes a tiny "Mu Vista" (6112) vacuum tube in each channel's driver stage. This tube must be ultraquiet—the kW's specified signal/noise ratio at 1V RMS output is greater than 105dB (A-weighted at half volume). The tube must be long-lived, too: it's soldered in place. The THD+noise is said to be less than 0.0068% (5V output, maximum volume), and MF claims a frequency response of 20Hz–30kHz, ±0.5dB. The proverbial 'straight wire with gain'? "
This unit is in absolutely pristine condition, and has a working, matching remote. I am only selling it as I stumbled across a Devialet 200 at a fab price, so gave up the search for the matching KW amp.
In 2005 this unit sold for USD $4,500 - so is a steal at the asking $$. And I can assume you, you will NEVER have felt such a silky volume control! NICE! 
Review here: https://www.stereophile.com/content/musical-fidelity-kw-hybrid-line-preamplifier-kw750-power-amplifier
I don't have the original box, so pickup preferred. Also..... it weighs 21 kgs, sans packing! can arrange pickup from Neutral Bay if needed.
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