When you have a rare amplifier, you also need the best Amp Tech in the business. 
All the Vintage Amplifiers we have for sale have been checked and serviced by Lars Vad, who is in our experience the best Amp Tech in Denmark. Therefore, we offer a 3 month warranty on all amps (and replaced tubes) we sell. However, because these are Vintage Amps they need to be handle with care and we recommend having them looked at by a skilled Amp Tech regularly. All our amps are ready to be played and sound fantastic. All sales are final for my Vintage Amplifiers and not returnable under any circumstances.