Review: AUDIO ELECTRONICS SUPPLY (AES) SE-1
And the best product of that time was the 300B SET amp SE-1. My first one was about 10 years ago, thoroughly tweaked out, sold to me by a nice fellow from
Recently I bought this amp again, in stock form. At its current ridiculous second-hand price, it’s a true bargain. The sound, without upgrades, is still much like what I remember. It is musical. Parts are really superb. High quality diodes, resistors and caps, including Kimber caps. As a matter of fact, recently E lent me the flagship
The SE-1 features beefy trannies, likely from Magnequest given that this is from
One cautionary tale. Some people buy it used and just plug their 300B’s in without bothering with the bias procedure. This is not good, even dangerous. The sample I bought this time sounded weak at the seller. When I got home, I measured the bias, and it was in the low 80’s, no wonder. After proper biasing, the amp sounded a lot more powerful. Another caution: The bias measures the COMBINED currents of the 2x 300B tubes, not individual bias. If you’re sure your tubes are a matched pair, there’s no problem. But, if the pair is not matched, it’s better to have lower bias current, as one tube may draw too much current and the other too little.
Aside from using ss rectification, the design is not much different form the flagships. And a good feature is separate switches for on/off and operate/standby. This allows for pre-heating of filaments to ensure better life for the 300B.
This amp can be easily converted to use other tubes, like 2A3. If you change the sockets, tubes like 6B4 can be easily accommodated with minor changes. A manual is essential. If you need one, contact me.
The sound? It’s as good as the 300B SEI and perhaps even the Signature monoblocks (not as powerful in this case). For best result, use Ken-Rad VT-229 silver plate.
Addendum (April 20, 2010)
Finally, I have loaded the Schematic and some pertinent info. Thanks for your patience and I hope the info helps.