Similar Items Description Specifications Color: Black Material: Aluminum Size: 95x100x32mm3.7*4*1.3 inch Power: DC12V 1A Frequency Response: 20HZ (-0.2DB) ~ 20KHZ (-0.2DB) SNR: 100DB Input Sensitivity: 300 ~ 2000MV Output: 3000MV THD: 1000MV 0.1% Features - J61 classic tube design, optimization line - Tube design can be replaced - Aluminum alloy shell, durable classic -DC12V Power supply, it is easy to find a suitable power source - Unique boost mode, the high voltage power supply, power supply mode is superior to common - Can be used with digital amplifier analog amplifier, active speakers Packing Included 1xHIFI preamp 2xTube Detail Image Payment 1.We accept PayPal only. 2.All major credit cards are accepted through secure payment processor PayPal. 3.Payment must be received within 7 business days of auction closing. 4.We ship to your eBay or Paypal address. Please make sure your eBay and Paypal address is correct before you pay. Shipping 1.We ship to your eBay or Paypal address. Please make sure your eBay and Paypal address is correct before you pay. 2.Items will be shipped within 1-3 business day when we received payment. 3.Delivery time depends on destination and other factors; 4.International buyers please note: a.Import duties, taxes and charges are not included in the item price or shipping charges. These charges are buyer’s responsibility. We will try our best to reduce the risk of the custom duties. b.Please check with your countrys customs office to determine what these additional costs will be prior to buying.