anatech
This forum is dedicated to Tubelab amplifiers, of which there are currently three, the SSE, the TSE and the SPP. The SPP is the only push pull amp and it is specifically designed for EL84's, 6BQ5's or 6CW5's (9 pin sockets).
The only amp that works with the EL34 is the SSE, which can also use the 6L6GC, KT88, 6550, 6V6 and other pin compatible tubes. The EL34 does work quite well as a triode in the SSE, although with slightly less power than a 6L6GC or KT88. Being a true pentode, the EL34 does have a different sound than the 6L6GC which many people, including myself prefer.
The TSE (refered to by the OP as the SE) uses DHT's like the 45, 2A3 or the 300B. Both amps are in the same power range, and both can be set up with small power transformers and operated in the 30 mA range (45 or triode 6V6) or larger power transformers and operated around 70 mA (300B or EL34, 6L6GC or KT88) so it is perfectly acceptable to use the same OPT in each design, given a similar sized output tube choice.