- Preamp tubes: Groove Tubes® - (4 x 12AX7), (2 X 12AT7) - Controller. Volume, Treble, Bass, Vintage CH Volume, Treble, Bass, Reverb, Speed, Intensity Seen cheaper somewhere else? No problem - send us your price proposal! All of our items have a 30-day return policy without any additional charges. Reason. Sheet music, reading material and software cannot be exchanged. The general terms and conditions of Zoundhouse GmbH & Co.KG apply. The European Union provides an online platform (OS platform) for the out-of-court settlement of consumer disputes When purchasing multiple items from us: Place the items in the shopping cart and select Request total amount from buyer at the top right. If you intend to buy multiple items: Put them into your shopping cart and choose combined shipping(up righ.
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