Audio Research REF75SE Stereo Tube Power Amplifier
75 watts per channel from two KT150 output tubes per side — Audio Research's Special Edition revision of the REF75, which replaced the KT120 tubes of the original with the larger KT150, one of the most capable beam tetrodes currently in production. The SE designation goes beyond the tube swap: upgraded internal components, improved power supply regulation, and the circuit refinements Audio Research applies when the baseline design is already at reference level and they want to take it further. Frequency response from 0.7Hz to 75kHz. Power bandwidth 7Hz to 60kHz. THD typically 0.6% at full rated output, below 0.05% at 1 watt — the distortion characteristic of a properly designed tube amplifier, where the numbers at listening levels are a fraction of what the spec sheet reports at clipping. The REF75SE is Audio Research's argument that a stereo chassis can deliver the full REF experience for systems that don't require monoblock power — the same circuit topology, the same transformer quality, the same engineering DNA as the reference monoblocks in a single enclosure at a price that reflects the difference in materials rather than a compromise in design.
$12,999 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
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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.
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75 watts per channel from two KT150 output tubes per side — Audio Research's Special Edition revision of the REF75, which replaced the KT120 tubes of the original with the larger KT150, one of the most capable beam tetrodes currently in production. The SE designation goes beyond the tube swap: upgraded internal components, improved power supply regulation, and the circuit refinements Audio Research applies when the baseline design is already at reference level and they want to take it further. Frequency response from 0.7Hz to 75kHz. Power bandwidth 7Hz to 60kHz. THD typically 0.6% at full rated output, below 0.05% at 1 watt — the distortion characteristic of a properly designed tube amplifier, where the numbers at listening levels are a fraction of what the spec sheet reports at clipping. The REF75SE is Audio Research's argument that a stereo chassis can deliver the full REF experience for systems that don't require monoblock power — the same circuit topology, the same transformer quality, the same engineering DNA as the reference monoblocks in a single enclosure at a price that reflects the difference in materials rather than a compromise in design.
$12,999 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 - Great condition. See scratch in photo. Manual, Power cord, and box included.