Threshold S/300 Stereo Power Amplifier
Nelson Pass built the S/300 before he left Threshold to start Pass Labs, and you can hear the lineage. Stasis topology — a circuit design Pass developed specifically for Threshold — keeps the output stage operating in a near-Class-A bias point across the power range, which means the amplifier sounds like it's loafing even when it isn't. 150 watts per channel into 8 ohms. Fully balanced differential input. Built like the kind of equipment that was designed to be repaired and run for decades, not replaced.
This is a reference-grade solid-state amplifier from the period when American high-end manufacturing was serious about the product. The S/300 drives difficult loads without complaint and has a warmth and texture that later solid-state amplifiers spent years trying to replicate.
$2,500 MSRP
Due to size and weight, this item may incur an additional shipping surcharge and is listed as Store Pick Up Only. Contact us for a quote if you wish to have it Shipped.
Phone: 888-248-3246
Email: info@echohifi.com
Inquire Now
Couldn't load pickup availability
Return Policy
Return Policy
We offer a 3-day return window on all purchases. Returns made to a credit or debit card will incur a 5 percent processing fee. Shipping costs, both to and from, are the responsibility of the customer if applicable.
After the 3-day window and up to 3 weeks from the date of purchase, items may still be returned, subject to a 20 percent restocking fee.
For shipped orders, customers must notify us within 3 days of receiving the item to initiate a return. Once the item is received back in the same condition it was sent, we will issue a refund minus all shipping charges and a 5 percent credit card processing fee.
Need Help? View our services
Need Help? View our services
Nelson Pass built the S/300 before he left Threshold to start Pass Labs, and you can hear the lineage. Stasis topology — a circuit design Pass developed specifically for Threshold — keeps the output stage operating in a near-Class-A bias point across the power range, which means the amplifier sounds like it's loafing even when it isn't. 150 watts per channel into 8 ohms. Fully balanced differential input. Built like the kind of equipment that was designed to be repaired and run for decades, not replaced.
This is a reference-grade solid-state amplifier from the period when American high-end manufacturing was serious about the product. The S/300 drives difficult loads without complaint and has a warmth and texture that later solid-state amplifiers spent years trying to replicate.
$2,500 MSRP
Due to size and weight, this item may incur an additional shipping surcharge and is listed as Store Pick Up Only. Contact us for a quote if you wish to have it Shipped.
Phone: 888-248-3246
Email: info@echohifi.com
Inquire Now
8/10 - Small specks on top, discoloration on heat sinks, see photos