SET Shootout China VS The USA


2A3 SET from china arrives any day now.

The tech who loaned me his UX250 (aka 50 Tube) amp, with a  12AU7 in front + a  6BH7 (??) , has incredible pure Cobalt out trans. ($1k+ each back in 2000, now no longer in production). . he will help me set up the  2A3. 

Has a  AX+AU my 2 fav front tubes anda   quad of 2A3's. 

My speakers are pure neutrality, no coloration, no distortion,. 

So whatever amp/ source you plug in, will register the nuances inherent in the circuit.

Will be very interesting. 

USA has pure cobalt out trans which gives the edge in power, but the china 2A3 has a 2 tubes per channel.

Gonna be interesting and will post a  YT upload with comments,

AFTER TESTING IS COMPLETEED.

Hand on to your horses at the OK Corral. 

Grab a  beer at the saloon, 

sundown shootout at the edge of town. 

 

mozartfan

@mozartfan 

SET on a  xover type speaker does not work, I tried it, its  a complete failure

Perhaps in your one instance,  the complete opposite experience for me. My 3 way 5 driver speakers were built from the ground up to be very compatible with SET amplifiers.  Same brand (Coincident) built by the same person (Israel Blume). Granted the crossover is a minimalist 1st order design (One  tweeter capacitor). I'm referring to the Coincident Total Eclipse II,  94 db sensitivity and a 14 ohm impedance load. 

It pairs exceedingly well with the Frankenstein MK II 300b SET mono blocks. 8 watts of pure music listening joy. It replaced my very good 100 watt mono blocks (6550 or KT 88). So once again it  most definitely depends on what specific amplifier (All 300bs aren't created equally) and what specific multi driver speaker (They aren't all the same). This is my sublime experience the past 12 years. 

Charles 

@jond 

But you are doing it again you're not listening to tubes you're listening to tube amps. So whatever tube it is you do listen to next make sure it's in a good amp.

100% correct👍

Charles 

BTW the 307 tube is not a DHT but is in a fact a pentode tube.

There are a couple of ways to turn it into a ’virtual triode’ with rather attractive plate curves.the equal of many a ’native’ DHT.. ie when configured in this fashion it can effectively be considered a DHT.

Triode strapped 6AV5 didplay remarkably similar plate curves to the 2A3, but are insirectly heated.

@pesky_wabbit

 I don't doubt what you say in regard to the final sound quality.  I just wanted to clear the air concerning the tube's innate 5 component/elements  construction. 

Charles 

I had no doubt of your motives Charles, just thought an explanation was warranted.