Sennheiser IE 400 PRO Replacement Earphone - Left, Smoky Black Mic Cables an independent headphone output with

an independent headphone output with dedicated volume control gives you complete flexibility while monitoring

Power Supply: External DC 9 Volt AC Adapter (Use only DC 9V (Negative center pin))

The unit is a hybrid processor that uses a selected 12AX7A vacuum tube with high reliability 990 op-amps in a transformerless signal path

Independent Subwoofer output for easily sharing it between different speaker pairs

Jazz fans will recognize the original Ibanez Super 58 pickups—the preferred pickup of George Benson

Sennheiser IE 400 PRO Replacement Earphone - Left, Smoky Black Mic Cables an independent headphone output withReplacement earphone for the left side of the IE 400 PRO Smoky Black.