Rolls HA204P Portable Battery Operated Headphone Amp

This item is brand-new, factory sealed.

Full frequency response, four channel headphone monitoring device designed for the recording studio, or other professional applications. Each output boasts a whopping 20 dB of clean channel gain.
* Stereo 1/8-in and Dual RCA Inputs
* Rotary Volume controls
* AC adapter included
* 15-35k Hz frequency response
* Lots of output level.... it s loud!
* 9V battery Operated
* Input Impedance: 47k Ohms
* Max Input Level: +13 dBV adapter, +8 dBV Battery
* Input Connectors: TRS Stereo 1/8-in, Dual RCA
* Outputs: 4 - TRS Stereo 1/8-in (3.5mm)
* Output Impedance: 10 Ohms each output
* Max Gain: 20 dB/Channel
* S/N Ratio: >90 dB
* THD: < .008%
* IMD (SMPTE): <.008%
* Nominal Current Draw: 30 Mills Min./ 400 Mills Max.
* Expected Battery Life: 8 Hours Continous use
* Frequency Response: 15-35K Hz.
* Recommended Headphone Impedance: 16 to 500 Ohms.
* Power: 15 VDC (Rolls Model PS27s)
* Weight: .85 lb
* Size: 4.5-in x 1.125-in x 4.5-in