200 Watt 6550 Power Transformer(s)

[GregS]

If you can live with 160W the Hammond PT278CX and OT1650T transformer set will do the job. The Traynor Custom Special is based on these transformers so you can refer to that if you're interested. One thing to note is that the heater winding is only rated for 6A so 4 x 6550/KT88 and a couple of pre-amp tubes will draw around 7+ A. The transformer can handle 25% above the rating continuously but you might want to keep this in mind if you're planning to use a lot of pre-amp tubes.

[imaradiostar]

Heyboer should be able to make a set that is more or less identical to the Hiwatt/Reeves or Orange design for similar money to Hammond. You will probably find this is an easier way to hit your voltage and power goals.

jamie