Tube Amps with Balanced Inputs


Why do so few tube amps come with balanced inputs, especially SET amps? I'm looking for a pair of SET amps (hopefully 300B), but can't seem to find any with balanced inputs, even the very expensive ones. Why is this?

- Stew
smeyers
Mcfarland,

Thanks for the tip. I'll take a look.

Ghostrider,

Ah, I hadn't thought of that. I'm running long interconnects to the amps, and it seems running balanced from the preamp to the amps is considerably less noisy than with a single-ended connection.
I don't think a true 'balanced' output is possible with a single-ended amp. George Wright's Mono 10 amps use a pair of 2A3's in Push/Pull and are one of the closest things to a SET sound I've heard from a P/P. Great little amps, but don't know what you are specifically looking for (price range, power, system matching, etc). The Mono-10's have both balanced and RCA connections and were wonderful amps in my system.

Marco
Jax,

Thanks for the tip. I don't know anything about their amps, but the price is certainl right. Basically, I'm currently using AES (Cary) Sixpac Amps (with KT-66 tubes), and just switched to Zu Tone speakers, which are very sensitive (claimed 101db). I'm using a BAT VK-5i, which is a balanced preamp, and thought of switching amps to try to get that SET magic I keep reading about. I really want to stay fully balanced, which was the reason for my post to begin with.

You mentioned that these sound close to SET amps. What amps have you compared them to?

- Stew
As I said earlier, SET is an unbalanced technology - you can't stay fully balanced all the way to the speakers.