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Terms and Conditions


Payment can be made with credit, debit card or Paypal using our secure payment site.  If you wish to make payment by post using either a cheque or postal order then please contact us.  Please note that we only accept GB sterling currency.  All prices shown are inclusive of VAT


MH Elite valve collection are guaranteed for 6 months , all other valves are guaranteed for 90 days.  Both are subject to the following:

We cannot accept liability for valves which are operated outside the manufacturer's operational limits or any breakages or valve failure due to incorrect bias voltage or component/amplifier failure.  It will be the buyers responsibility to ensure all possible safety measures are adhered to whenever working with high voltage equipment.  Mike Hill Services can fit valves for you - contact us via email for details.


All valves must be fitted by a qualified technician

BIASING/FITTING VALVES:  When replacing valves the amplifier must have the bias voltage checked/adjusted by a qualified technician*.  Output valves must be monitored when being replaced to ensure correct operation.  MHS cannot accept liability for valves that are not correctly fitted by non-qualified technician.

AMPLIFIER:  Should always be fully disconnected from the mains electricity supply before attempting to fit any valves.  PLEASE NOTE that hazardous voltage may still be present within amplifiers even when disconnected from the mains electricity supply for a long period of time.

MHS fit bias valves purchased from Mike Hill Services.  Please email for further information


If a valve turns out to be defective, a full refund or replacement will be given once the item is returned and provided the item is in its 'from new' condition other than the defect.  The following procedure applies:

  • Mike Hill Services must be notified immediately
  • The defective item must be returned within 7 days of contacting Mike Hill Services
  • It will be the buyer's sole responsibility to cover all postage and packaging for the returned item

If within 7 days of purchase you wish to return a valve purchased in error then we will exchange or refund the item provided the item has not been used and is in its 'from new' condition.  Valves that show any evidence of logo discolouration, base score or scratches cannot be replaced.  Please follow the above procedures.


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Orders placed before 3pm (Monday - Friday) will be dispatched the same day (subject to availability)


Orders will be dispatched within 1 - 2 working days (subject to availability)


Orders will be dispatched within 1 - 2 working days (subject to availability)

TARIFF - Royal Mail

Economy 1 - 5 days                                                                          from  £4.60
UK Royal Mail First class 1 - 2 days                                                    from  £5.00
UK Guarantee next day (excluding Saturday & Sunday)                       from  £8.95
International Tracked & Signed for - Europe                                        from  £12.60*
International Signed for - Rest of the world                                         from  £20.60*

  • FOR LARGE ORDERS ( more that 10 x valves, 2 x BIS boxes & 2 x guitar leads) EMAIL FOR CONFIRMATION OF DELIVERY CHARGES

Pick-up from workshop BY APPOINTMENT ONLY - if this option is selected we will email when order is ready asking you to call to arrange a convenient time for collection


If you require any further information or have any questions please email  We will be more than happy to answer any of your queries


We do not store credit card details nor do we share customers details with any Third party


Mike Hill Services
80 Buckingham Road
Milton Keynes

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