- The 500 series - 65 dB gain - Microphone input on the front and back - Line / instrument input jack - 20 dB pad-switch - 48V phantom and phase switchable - LED-VU meter - Lownoise preamp (-129dB) - Circuit design with the API2510 and 2520 operational amplifiers - Requires API Lunchbox 500-6B or 500VPR 10Slot rack EUR 1119.00 - See more - Buy online