Threshold SA/4e specs are clearly stated in print in both in the owners operation manual and service manual. Also even states in my original Threshold brochures.
"30 amps continuous and 130 amps peak".
The Threshold SA/4e power amplifier is Pure Class A and will drive any speaker out there. I've owned some pretty ineficient speakers like Apogee Divas, Sonus Faber Extremas, etc. in the past and the Threshold SA/4e easily drives them. In fact there is a Threshold SA/4e for sale. But personally does not look authentic. The SA/4e has gold accents with an oval cut out face plate for the model number. The person on Audiogon may have what you can call a chop-shop Threshold SA/4e. I emailed the seller and they are trying to contact the original owner.