150wpc Class A / AB STASIS Stereo Power Amplifier w/ Optical Bias
All pre-owned product is tested in our service department and have been passed for sale... and comes with a 90 day warranty!
In nice condition ! A few scratches on the front of the rack handles and a deeper one on the upper right rear of the rach handle (shown in pix)
Original box and packing are NOT included. LOCAL SALE ONLY! Last image is the specs.
Circa 1983-88. With optical bias.
The Threshold brand was founded in 1974, introducing the first of what would be a long series of ground breaking products using the STASIS technology, developed and patented by founder-engineer Nelson Pass. One of his best designs - technically (and cosmetically). Can handle low impedance loads with ease.
The techie stuff: STASIS technology is a "Single or dual channel, non-phase inverting audio power amplifier employing circuitry to suppress voltage and current variation and enable performance to be dominated by a system maintained in a stasis condition of constant voltage/constant current, linear state operation. No overall negative feedback is employed around the amplifier system. No output protection circuits are utilized. Active constant current sourcing is employed at every gain stage. Power is sourced through a one kilowatt transformer and greater than a 70k microfarads capacitance."
