300B tube integrated amp with both XLR in and out

My first post here, I'm searching to find an 300B tube integrated amp with both XLR in (if has more than one will be perfect) and pre-out + remote control. Search a lot on the web with no luck. My system need a two XLR amps, so I prefer first - with 300B tubes, to control second power XLR amp after analog crossover. If anyone ever seen an amp with that options will be very helpful..

Don't need a separate preamp, this one is a easiest part. Only amp's new, with warranty, do not need any second hand and discontinued items.. Thanks.
 

Tube amps rarely have XLR connectors. Audio Hungary Qualiton is one of the few I've seen advertised with a single XLR input.

300b amps are a minority, Amazon does have this integrated 300b amp advertised with 1 XLR input but it's  anyone's guess on whether its any good.

https://www.amazon.com/Willsenton-Single-Ended-Integrated-Amplifier-Balanced/dp/B0841J88GH

4 hours ago, davide256 said:

Tube amps rarely have XLR connectors.

Rare? Perhaps not as common but not rare. Atma-Sphere, Rogue Audio, Prima Luna, Decware to name a few that offer tube amps with XLR (balanced) connectors.

Most, not all, of the 300b tube amps are called "Single Ended", the opposite of balanced (which uses XLR). The term "SET" is indeed "Single Ended Triode"

The single tube per channel 300b amps that offer XLR connection have a built in transformer to convert the XLR input (balanced) to single ended for the amp to use. (there is discrete, and chip, circuitry that can do the same) 

One can use XLR cables with any single ended amp (RCA inputs) by using an external transformer. A great example of this are the Jensen boxes. Google "Jensen PC-2XR Pro-to-consumer isolator" I have one of these, and it worked well with my long interconnect from pre to amp. Most of my prior amps were single ended FirstWatt DIY amps. I had hum with a long RCA run, the XLR does this quietly. I currently have truly balanced, differential, amplifiers, as well as the preamp - so the XLR works without the extra transformer.

On 3/1/2023 at 11:59 PM, Bones13 said:

Most, not all, of the 300b tube amps are called "Single Ended", the opposite of balanced (which uses XLR). The term "SET" is indeed "Single Ended Triode"

 

The single tube per channel 300b amps that offer XLR connection have a built in transformer to convert the XLR input (balanced) to single ended for the amp to use. (there is discrete, and chip, circuitry that can do the same) 

 

One can use XLR cables with any single ended amp (RCA inputs) by using an external transformer. A great example of this are the Jensen boxes. Google "Jensen PC-2XR Pro-to-consumer isolator" I have one of these, and it worked well with my long interconnect from pre to amp. Most of my prior amps were single ended FirstWatt DIY amps. I had hum with a long RCA run, the XLR does this quietly. I currently have truly balanced, differential, amplifiers, as well as the preamp - so the XLR works without the extra transformer.

My English is not my first language, so I do not understand what you say. There is no any word in my question about cables, I need balanced so called XLR pre-out and input for balanced dac on some 300b tube integrated amp. I search in a audio a lot time for this, and they mostly made RCA or SE tube amps which maybe is the easiest way to get some money from customer. If you trying to say to me that all today technology lead to SE 300b tube amps, because they sound better then XLR ones, please explain. Thank you. It's not a joke: over my short 30 years experience never hear anything which sound better in SE vs. balanced one. So if in the tube amps the today technology is on SE, please tell me. Thanks again, I'm only listener, not an engineer.

2 hours ago, Lyubo said:

My English is not my first language, so I do not understand what you say. There is no any word in my question about cables, I need balanced so called XLR pre-out and input for balanced dac on some 300b tube integrated amp. I search in a audio a lot time for this, and they mostly made RCA or SE tube amps which maybe is the easiest way to get some money from customer. If you trying to say to me that all today technology lead to SE 300b tube amps, because they sound better then XLR ones, please explain. Thank you. It's not a joke: over my short 30 years experience never hear anything which sound better in SE vs. balanced one. So if in the tube amps the today technology is on SE, please tell me. Thanks again, I'm only listener, not an engineer.

 

XLR is a cable solution to eliminate RF pickup on long unbalanced leads (SE). I suspect that doing this with tube amplification is far more costly than with solid state.

Its not uncommon to see a single XLR in for a tube pre section, converting to SE. What is uncommon is XLR out. There's an Audiogon forum discussion from 2020 that you might find helpful

https://forum.audiogon.com/discussions/preamps-with-dual-xlr-outputs

An XLR balanced interconnect system is one thing.

An amplifier with a Class "A" single-ended output stage is another.

Two totally different subjects.

Note that it's balanced interconnect system, not just the cable.

Sorry I see now what I post: 300B tube integrated amp with both XLR in and out

I need 300B tube integrated amp with both XLR in and XLR pre-out.

I wonder if something like this will work.  The Van Alstine DVA R2X is a single-ended to differential converter (i.e., unbalanced to balanced converter) about $300 usd.

Vinnie Rossi Brama Integrated.

theres plenty of tube amps that have XLR BUT theres almost none that are 300B and XLR. what you could do it get a 300B then add a Decware ZBIT.