Backert Labs Rhythm 1.1

Backert Labs Rhythm 1.1 Tube Preamp

List price when new was $7500.  I am the original owner, it was purchased factory direct January, 2018.

This preamp has been very lightly used and is in like new condition.  No scratches or marks of any kind.

Single ended inputs/outputs only (no balanced). Output phase is inverted (so you just reverse positive/negative speaker connections).

Please refer to attached photos for preamp specifications.

Operating manual, remote, and original boxing included.

Will ship to U.S. addresses only.

Features:

1. Automatically and continually customizes tube bias, matching the exact needs of each pair of 12au7 tubes you insert (at time of purchase, the 12au7’s were factory upgraded to wonderful Psvane brand tubes).

2. Has a power supply run exclusively by teflon capacitors -  VCap's

The Rhythm 1.1 is single-ended, with 5 RCA inputs and 2 RCA outputs.

It has a REC OUT output, a balance control, mute switch, mono switch, and a lighted volume control knob for late-night listening sessions.

Remote volume control is standard.

The handy tube access door allows tube changes with no tools, no screws to get lost, just push the door open and your tubes are right there.  And the protective tube enclosure inside the tube access door prevents young fingers from ever touching the circuit board.

These are world-firsts, thanks in part to the patented power supply that Bob Backert developed for this preamplifier, which is called GreenForce.(TM)

The technical advances of the Rhythm 1.1 go well beyond what can be written here. The results: extremely live, high resolution, rhythmic, dynamic, natural sound. Compelling. When called for, exciting. Pure, liquid musicality. Ease-of-use enhanced by our handy tube access door on the top panel -- no more messing around with little screws.

Bob Backert is an electronics veteran who has been working with amplifiers and preamps for decades. He brings all of his experience to this preamp.

Reviews have been extremely positive:

"You want this. Trust me -- you want it bad." -- New Record Day

"The long and the short of it is that the Rhythm 1.1 is completely quiet, highly resolving, explosively dynamic, and sounds freakin’ amazing. I suppose you could say that I’m a fan."
--Part Time Audiophile

"Better able to clearly expose micro-details than any other preamplifier I have ever used." -- Home Theater Review

"My findings could seem like a setup, because they mirror the company's claims so well. Yet the Rhythm 1.1 behaves *exactly* as its name and circuit descriptions predict."

-- 6moons.com

"One of the most tuneful and engaging preamps I have ever heard." -- Positive Feedback

 "Is this mecca for tube rollers, or what?" -- The Absolute Sound