Doepfer A-139-2 Headphone Amplifier keeley-electronics and in BPF (band pass 1042943
Yard notes & kiln story
Description
Doepfer A 139 2 Headphone Amplifier keeley electronics and in BPF (band pass 1042943 and in BPF (band pass filter) frequencies above and below a modulated center point are cut The M Audio SP 1 is a simple Headphone Amplifier two channel headphone amplifier