True Fully Balanced Amplifiers


What are the least expensive true FULLY BALANCED power amplifiers available?
Adcoms, Rotels, and Parasounds have balanced inputs, but are not truly balanced.I have an Adcom GFP-750 that is Fully balanced and would like to try it with an amp that is also fully balanced at a reasonable price.
daltonlanny
At January CES, Portal Audio will be introducing a 200 W Fully Balanced Monoblock amp. MSRP per PAIR will be around $3k. These will be available only thru the Portal website (for US customers, that is) and will have the in-home audition program.
Disclaimer: I'm the president of Portal.
Used Rowland Model 1s appear regularly on Audiogon for no more than $1,200. Pass Aleph 5s go for less than $1,500.