When Only the Best Will Do

The Ray Tubes RESERVE 6SN7 isn’t for everyone. It’s the distillation of decades of experience. With a bespoke design, small-batch production, and meticulous selection, the Ray Tubes RESERVE Collection reveals audio details you never knew were there.

Hand selected and tested, the Ray Tubes RESERVE 6SN7 is designed specifically for hi-fi audio applications. Featuring gold-plated pins and our monocrystalline carbon Magic Coating, the RESERVE Collection easily outperforms New Old Stock and new production alike. Fewer than 5% of production meets our standards.

The 6SN7 vacuum tube is a dual triode usually found in the driver stage of power amps. It’s been used in audio amps since its introduction in 1939. From 1949, it was used in the famous Williamson circuit. Outside of audio applications, it was a crucial component in ENIAC—the world’s first digital computer.

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Sound Characteristics

The Ray Tubes RESERVE 6SN7 offers a warm, natural sound with smooth treble and an outstanding midrange, making it an excellent choice for listeners who enjoy a vintage, rich, and emotionally engaging tonal character.

  1. Bass Performance
    Smooth and natural, leaning towards a more organic and fluid bass extension while still providing sufficient weight and density.
  2. Midrange Performance
    Rich, natural, and emotionally engaging. Vocals sound warm and expressive, allowing the singer's emotions to come through effortlessly.
  3. Treble Performance
    High frequencies are smooth and refined, emphasizing a natural treble extension. 
  4. Dynamics and Soundstage
    Well-balanced and natural dynamic presentation, with an expansive soundstage offering excellent depth and stereo separation.

Technical Specifications

  • Tube Type: 6SN7
  • Tube Socket: 8-pin
  • Max Anode Dissipation Power: 5 W
  • Max Screen Dissipation Power: N/A
  • Output Power in Class A1 Amp (Single Tube): N/A
  • Output Power in Class AB1 Amp: N/A
  • Max Anode Voltage: 450 V
  • Max Screen Voltage: N/A
  • Max Grid Voltage: ~8 V
  • Heater Voltage: 6.3 V
  • Heater Current: 0.6 A
  • Transconductance: 2.6 mA/V
  • Amplification Factor: 20
  • Internal Resistance: 7.7 kΩ

Package Contents

  • Set of four, two, or single vacuum tube
  • User handbook featuring burn-in guidelines
  • Certificate of authenticity and warranty

Compatible Amps

Explore Ray Tubes' Tube Amp Compatibility List.

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The Ray Tubes One Year Warranty

Most vacuum tubes are notoriously fickle. That’s why warranties are rare. But we trust our products and we’re proud to offer our One Year Warranty against manufacturing defects. For more details, check out our warranty page.




Reviews by WaveTheory

These are Ray 6SN7 RESERVE… with them in, the Baltic 3 became the most resolving DAC I have on hand, the most holographic DAC I have on hand, and probably has the most realistic, natural, and organic timbre to it — top to bottom.

11/28/2024

Joy of Vinyl - Rick Coste

These tubes have stopped my obsession over New Old Stock. I have not experienced holographic sound like I do with these tubes before.

These tubes have changed my experience of listening to my records... I really just want to listen to them all again.

1/12/2025

Reviews by WaveTheory

These may very well be the best vacuum tubes that I personally have had the privilege of listening to.

7/1/2024

Hi-Fi Cave

The Ray Tubes 6SN7 RESERVE has the best sound stage deep wide very layered.

5/31/2024

Wes S on Head-Fi

The Apos Ray 6SN7 RESERVE is one of the best options sonically if one is looking for a 6SN7.

4/18/2024

Link to Review

Passion for Sound

It is a phenomenal tube, fantastic and really high-quality tubes.

2/22/2024




Where to Buy

Local retailers are the heart of audiophile communities around the world, which is why we believe they’re best positioned to help you with your purchase. Ray Tubes are available from our retail partners worldwide—click the button below to find one in your region.

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