Check the listing for details. PRT06B Fever Tube Preamplifier PRE Bile Preamp Finished Board Reference Matisse. Color: Yellow, Condition: New. Listed at 73.31 USD. PRT06B Fever Tube Preamplifier PRE Bile Preamp Finished Board Reference Matisse PRT06B design thinking:It is consistent with the 400V power supply voltage of the original machine.The voltage parameters are the same as the original machine.DC filament power supply, avoiding the influence of voltage fluctuation on the filamentWith a delay to turn on the output signal to avoid the strange sound generated by the tube when it is in the heat engine Listening Feelings:The test uses Twilight's 12AX7+12AT7 (also measured 12AX7), the most special in the low frequency, the depth of the dive, the strength, the bounce is unmatched by many stone preamps, when using the imported tube EN foot test, the details are more Rich, quieter and more mellow.Parameters:PCB size: 150*200*1.6MM FR4 A grade platePower supply requirements: 0-300VAC*40mA, 0-14VAC@1A Special Note:We have matching transformers for sale.If you need,you can contact us,thanks!Package:1pc PRT06B Fever Tube Preamplifier PRE Bile Preamp Finished Board Reference Matisse Delivery Details We provide standard shipping to international via China Post airmail or Hongkong Post airmail with tracking number.Email us if not receive items. We only ship to the approved address given in Paypal Payment.Please make sure payment address in Paypal is correct.Any non-received items caused by invalid address registered on Paypal are not in our full refund or replacement policy. Returns and Replacements We accept returns and replacements within 30 days from the day the cutomer receive the products.Please make first contact within 30 days from receiving the order.Products should be returned in original condition. Powered by SoldEazy