Liberty Audio B2B-1 phono preamplifier Specifications

Sidebar 1: Specifications

Description: Solid-state phono preamplifier with unbalanced inputs and outputs (balanced inputs optional). RIAA accuracy 0.1%. Overall voltage gain: 44dB or 64dB, depending on internal setting. Equivalent short-circuit input noise: 100nV. Maximum output voltage: 12V. Risetime: 300ns.
Dimensions: 17" W by 10.5" D by 3.25" H. Weight: 11 lbs net.
Price: $1749. Approximate number of dealers: sold direct with a two-week return policy.
Manufacturer: Liberty Audio, 380 Vernon Way, Suites I–J, El Cajon, CA 92020. Tel: (619) 579-6450. Web:

Liberty Audio
380 Vernon Way, Suites I–J
El Cajon, CA 92020
(619) 579-6450

Balack123's picture

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DanaHolmes's picture

I was looking for a phono preamp to run with my PrimaLuna Dialogue Premium HP Integrated and this little beauty popped up. The review I read spoke of 'rock' music and AC/DC and that is what caught my attention. I loved the sound of my tubes but I also wanted a preamp that would keep my rock and power pop clean and tight before sending the signal to the tubes - this appeared to be the phono stage. I then introduced myself to the manufacturer Peter, and had a few conversations via email. I knew that I could try it out and if I didn't like it I could then just simply ship it back for a refund. I still have it in my system today and really dig it. One solid unit that I am very musically happy with.

JE WARD's picture

I liked the report, although this preamp cannot be heard carefully because the Liberty direct selling system.
Query: Is B2B-1 vastly superior to Graham Slee Accession M, or the Reflex M.
It is a high bet, buying it without being able to compare it. Except for, "It's a mini Boulder 1008, I found myself thinking-a big compliment."
I would also appreciate if dual mono operation is convenient, for Soundsmith H-output the Voice / the Aida.