🟦Audio Research Reference 80S

Stereo power amplifier – Reference Series

⭐ Key features of the REF80S

• Stereo tube amplifier directly inspired by the Reference 160S models.

• 70 watts per channel with KT150 tubes, combining finesse and authority.

• Ultralinear and Triode modes to adapt the sound signature.

• Iconic Audio Research design with transparent power indicator.

• A model highly appreciated at Son Ultime, selected by Nicolas for its exceptional synergy with Bowers & Wilkins speakers, especially the 803 D4 and 804 D4.

📝 Product presentation

The Audio Research Reference 80S brings the essence of the Reference series into a stereo format designed to deliver the musicality of the brand's large tube amplifiers, but in a more compact and accessible version than the 160S and 160M. It uses two KT150 tubes per channel, capable of delivering 70 watts of power while maintaining the level of finesse, detail, and transparency typical of the Reference Line.

Like its big brothers, the REF80S offers Ultralinear and Triode modes, allowing you to adapt the amplification to the character of the installation or the musical style: Ultralinear offers more dynamics and impact, while Triode mode provides a more intimate listening experience rich in harmonies.

At Son Ultime, the Reference 80S is one of the most sought-after amplifiers for Bowers & Wilkins 800 Series speakers, particularly the 804 D4, 803 D4, and 805 D4. Nicolas uses it to demonstrate how Bowers & Wilkins speakers can gain in substance, fluidity, and realism when powered by reference-level Audio Research amplification. The result is an airy, precise, and vibrant soundstage that highlights the natural character and exceptional resolution of these British speakers.

✔️ Conclusion: His Ultimate Sound

For Nicolas and the Son Ultime team, the Reference 80S represents one of the best entry points into Audio Research's Reference series. It combines organic musicality, great transparency, and perfectly controlled power, while offering remarkable synergy with Bowers & Wilkins speakers. It is a centerpiece for any audiophile seeking a refined, immersive tube experience perfectly suited to high-resolution speakers.

📦 Specifications

🔷 Amplification

• Power: 70 watts per channel in Ultralinear

• Power: 35 watts per channel in Triode

• Output tubes: 2 KT150 per channel

• Input/driver tubes: 2 6H30 + 1 6550

• Modes: Ultralinear / Triode

🔷 Connectivity

• XLR Input

• RCA input

• Multi-way speaker output terminals

• 12V Trigger

🔷 Performance

• Bandwidth: 0.7 Hz to 60 kHz

• THD: < 1% at nominal power

• Input impedance: 300 kΩ (balanced), 150 kΩ (RCA)

• Signal-to-noise ratio: > 113 dB

🔷 Food

• Silent power supply derived from the higher Reference models

• Multi-section regulation

• Thermal management by convection

🔷 Dimensions & Weight

• Dimensions: 48.3 × 27.9 × 33 cm

• Weight: 22.7 kg