AC Adapter For PreSonus TUBEPre BLUETUBE 12AX7 Mic Acousti-Q Studio Tube Preamp
(PreSonus TUBEPre and BLUETUBE 12AX7 Preamp Microphone Acousti-Q Studio Channel Tube Preamp. ---1 AC Adapter., if you have any need.). 4 Strong built for heavy duty and long usage performance.