Products > Valves > Groove Tubes

Watford Valves have been using valve equipment since 1976 and has been selecting and supplying valve to the professional market for over 20 years. The term 'new old stock' refers to tubes or valves which are new but are from factories which have long closed down. These factories such as Mullard, G.E.C, Telefunken, Siemens, Philips, General Electric and R.C.A produced some of the best valves ever made which is why these items have become very sought after in the music industry. Watford Valves keeps a huge inventory of new old stock tubes valves as well as current production items. Therefore Watford Valves can offer one stop shopping to satisfy the most demanding of needs of the professional market, the collector or the enthusiast. All output tubes valves are priced individually. All prices contained on this web site are exclusive of VAT.

Groove tubes were founded back in 1979 by Aspen Pittman and have become one of the most respected valve brands in the world.

We Offer Two types of Groove Tube selected valves

The first is standard which is tested and selected by Groove tubes using their in house selection and grading.

The second is Groove tubes Super Premium Burst tested which in addition to GT In house testing we additionally Drive test all pre amp valves and burst test all out put valves.

So when you combine this with Watford Valves special test facilities you get a GT distortion rated output valves which has also undergone our own unique real world burst testing and then dual matched by us on current and gain. All pre amp valves in addition to GT in house testing are then drive tested by us and checked for noise and microphoney. We believe this combination gives you the best tested valves available anywhere in the world.

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  • NameManufacturerCommentStockPrice PhotoOrder
  • ECC83/ ECC83S-GROOVE TUBESGroove Tubes20% Discount

    ECC83/ECC83-S Groove Tube is the most popular GT ECC83/12AX7/7025 replacement valve as it produces ...
    In stock£20.00
    £16.00
    Buy Now
  • ECC83/ 12AX7M-GROOVE TUBESGroove Tubes20 % Discount

    The Groove Tubes 12AX7 Mullard reissue was instigated by Aspen Pittman with Groove Tubes ...
    In stock£20.00
    £16.00
    Buy Now
  • EL84-S-GROOVE TUBES SUPER PREMIUMGroove Tubes30% Discount

    Groove Tubes Super Premium valves are specially burst tested by us. We take selected GT items and ...
    In stock£24.00
    £16.80
    Buy Now
  • ECC83/ ECC83S-GROOVE TUBES SUPER PREMIUMGroove Tubes20% Discount

    Groove Tubes Super Premium valves take the selected GT items and in addition to GTs in house ...
    In stock£23.00
    £18.40
    Buy Now
  • EL34/ EL34 MULLARD-GROOVE TUBES SUPER PREMIUMGroove Tubes30% Discount

    Groove Tubes Super Premium valves are specially burst tested by us. We take selected GT items and ...
    In stock£27.00
    £18.90
    Buy Now
  • EL34/ EL34 MULLARD-GROOVE TUBES SUPER PREMIUM MESA SELECTGroove Tubes30% Discount

    This valve is specially selected to run in Mesa Boogies fixed bias arrangement and will work in all ...
    In stock£28.00
    £19.60
    Buy Now
  • ECC83/ ECC83S-GROOVE TUBES SUPER PREMIUM-BALANCEDGroove Tubes20% Discount

    Special balanced item with matched sections for use in phase inverter position, tube microphones or ...
    In stock£25.00
    £20.00
    Buy Now
  • ECC83/ 12AX7M-GROOVE TUBES SUPER PREMIUMGroove Tubes20% Discount

    Groove Tubes Super Premium valves take the selected GT items and in addition to GTs in house ...
    In stock£25.00
    £20.00
    Buy Now
  • ECC83/ 12AX7M-GROOVE TUBES SUPER PREMIUM-BALANCEDGroove Tubes25% Discount

    Special balanced item with matched sections for use in phase inverter position, tube microphones or ...
    In stock£29.00
    £21.75
    Buy Now
  • 6L6GC-G.E-GROOVE TUBES RE ISSUE SUPER PREMIUMGroove Tubes25 % Discount

    Groove Tubes Super Premium valves are specially burst tested by us. We take selected GT items and ...
    In stock£30.00
    £22.50
    Buy Now
  • 6L6GC-G.E-GROOVE TUBES RE ISSUE SUPER PREMIUM MESA SELECTGroove Tubes25 % discount

    Mesa Select for use in Mesa Boogies

    These valves are specially selected to work in the ...
    In stock£30.00
    £22.50
    Buy Now
  • 6L6GC-GROOVE TUBES GENERAL ELECTRIC RE ISSUE SUPER PREMIUM Trade 12 piecesGroove TubesThe Groove Tubes 6L6GC General Electric reissue was instigated by Aspen Pittman with Groove Tubes following the ...In stock£360.00
    £216.00
    Buy Now
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All prices contained on this page are exclusive of VAT. This is currently charged at 20% and is payable by all EU countries.


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