Something new - 2A3 monoblocks

[Paul Joppa]

PT-10 is maxed out at about 390 volts,if you are drawing 50mA.

 

[Deke609]

Many thanks PJ. 

 

[BrucePoi]

Roughly when will these be available for order? 

 

[Doc B]

We are working that out this week and I hope to have an answer soon.

 

[Deke609]

The amp will come with DC filaments straight away. 

@PB - does it in fact come stock with a DC heater circuit?  I can't spot it in your pics and the "In Depth" description on the purchase page makes no mention of it and states that the amp has a humpot - which would seem superfluous if the output tube is DC heated.

cheers and thanks, Derek

 

[Paul Birkeland]

Hum pots are still useful with DC heaters.  The DC heater circuit is built above where the meter mounts.  We would have a really tough time getting to a 250uV noise floor without it!

 

[Deke609]

Cool. Thanks.

We would have a really tough time getting to a 250uV noise floor without it!

Yeah, I guess i should have figured that. 1/4 mV is incredibly low.  Does the 5670 contribute to that low figure?

cheers and thanks, Derek

 

[Paul Birkeland]

No, the 5670 doesn't contribute measurably to the noise floor, at least not that I am able to measure.

 

[QueenBottlehead]

I want to give a BIG thank you to kgoss and Raymond P for helping us decide on the name! Love it, love you guys, and love all of your support!

 

[Deke609]

Will it come wrapped in lace with scented candles?  ... You know, on account of the name and all

 

[triode]

I know you would not recommend it, but is it possible to built these in mirror configuration without too much trouble? What would be the greatest challenge for mirror build?
Note that, I did mirror build for my Paramount. Its rather confusing but thank God nothing serious happened.

Thanks

 

[Paul Birkeland]

I don't see why you couldn't.  The plates come powder coated with the top side being well finished and the bottom side not so well finished so the grounds can connect to the chassis properly.  You would have to sand one down and powder coat the other side. 

If you didn't have any issues building the mirrored Paramount, then building a mirrored MonAmour shouldn't be too tough.  Things will change a fair bit in terms of 4 pin socket wiring, as you'll have to mirror the socket as well so the filament pins still face the hum pot (you probably did this for your Paramounts as well).

 

[triode]

Thanks Paul,
If the plate already finished then I might just use it rather then flip it and try to match the finish!

BTW these have universal power transformer, correct? Its 240VAC line in my country

 

[Paul Birkeland]

Yes, the power transformers are universal, and there is a true 240V nominal winding option (along with 220V and 230V).