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Vincent SV-237 /SV-237MK/SV-237MKII/SV500 Integrated Amplifier Upgrade Vacuum Tube Replacement Kit

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Product Description:

A Complete 3-Piece 12AX7 (1) /6N1P (2) Upgrade Vacuum Tube Kit -for the Vincent SV-237, SV-237MK & MKII & SV-500 Pre-Amplifier Vacuum Tube Amplifier.

Vincent Tubed Products are of a very good Product Build and Quality. However, they are greatly limited by the cheap mass-market Chinese Stock vacuum tube copies which are relatively poor in quality and designed to keep costs down. The original and far superior Russian tubes. The superb Sovtek 12AX7 WA & Premium or Elite 6N1P vacuum tubes are a great upgrade and will dramatically improve the sound across the spectrum through bass to mids and highs.

This complete Upgrade kit contains two 6N1P Standard, Premium or Elite tubes (electronically matched pair) and a single Sovtek 12AX7 WA. The -ev suffixes on the tubes denote very high ruggedized build quality, prolonged life and superior sound quality.


Includes a matched pair of 6N1P Voskhod/Reflektor Plant. A great upgrade with sonic benefits.


Includes a matched pair of 6N1P-ev c.1975 -80s USSR Military Ruggedized Voskhod Rockets. Improved longevity and build. Great harmonics across the spectrum.


Includes a matched pair of 6N1P-ev/v Voskhod/Reflektor Plant Vintage USSR vacuum Tubes. c1963 – 1974 highly scarce tubes containing high levels of gold, caesium and cadmium. Ultimate sonic upgrade with exceptional both even and odd harmonics. Hard to obtain at any price.

Ruggedized Build: Life expectancy: 5000 hrs. Nickel Plated Pins , Gold Grid.

Due to USSR military Specification, they make a superb Upgrade.

Quality Guarantee:

Above all, our Vincent SV-237 vacuum tubes are Fully Bench tested. Certainly No Leaks or Shorts.

As a result of their high specification, they are extremely robust.

Military grade means improved tighter and deeper bass!

Open mid-range, detailed treble, better timing and overall cohesion can be expected.

Free 3 x BS310 Set of silicone anti-vibration dampers.

Full fitting instructions included.

If you are unsure about your Amplifier’s requirements you can download a .pdf User Manual for free here

*Never buy these tubes from an untrusted source. Vintage tubes may cause serious damage when untested.

 Tested in the UK. Full 30 Day Guarantee. No lengthy returns or customs duties!

More Info

Additional information

Weight 0.26 kg

Standard, Premium, Elite

Returns & Delivery

We offer a No-Quibble 30 -Day Return & Refund on all our Products. Please refer to our Return & Refund Policy for full details.

We aim to ship next Working Day by your chosen Postal Service. See our Shipping Policy for further details.


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