JJ Valve amp Kit 4x EL34 3x 12AX7/ECC83 Premium Tested

How we test

Tubes arrive at Voc Rock Guitars factory tested, but we then apply our own rigorous tests and test for....

Leakage between elements/ shorts/ opens Gain/Transconductance Noise floor/ signal to noise ratio and audible live noise test Current drive and anode balance with true load conditions applied All Power tubes are closely matched to within 2% of Plate current at realistic working voltages. Packaging and delivery

Our Postage prices include extensive packaging that we believe is necessary for the transport of delicate valves. Pack and Post discount will be applied when more than one item is purchased from the same listing since the items will be packed together. We aim to ship all items within one working day of cleared payment. All prices shown include Current VAT rate.

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Terms of Sale PAYMENT

Payment is due within 7 days of auction's end. We only accept STERLING postal orders, Cheques, or PAYPAL payment.


Should you not be happy with your purchase we will be pleased to offer a refund once we receive the item back and providing the item is not damaged in any way. It will be the buyer's sole responsibility to cover all postage and package costs as outlined in the listing prices


If you need additional information or have any questions, please contact us BEFORE placing your bid and we will be more than happy to provide information on the sale item, payment or shipping.

JJ VALVE KIT 4x EL34 and 3x 12AX7 (ECC83) 7 valves total

Great tubes offering warm and detailed mids.

All our Kits are supplied closely matched and with one specially selected Balanced pre amp tube to be used as phase inverter in the output tube driving position of your amp.


All the tubes we sell are brand new direct from the manufacturer and are premium tested and matched by our technical staff. They are subjected to various rigorous tests using both analogue and computerised digital equipment.

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