ROLLS 4 Channel Studiophile Headphone Amplifier ROLLS 4 Channel Studiophile Headphone Amplifier Item #: HA243 Available For Backorder $149.00 Qty: Backorder Add to WishlistAdded to Wishlist | Add to CompareAdded to Compare View full details Main Features 4: 1/4" TRS Headphone Outputs with Level Control. With the new JRC3414 I.C.'s it has plenty of gain!!! 1/4" , 3.5mm and RCA A and B Inputs. Switchable mono or stereo for both A and B inputs Input Impedance: 10 K Ohms Maximum Input Level: +26 dBV Max Gain: 20 dB per channel Output Power: 326 mW per side, 652 mW per channel (@ 62 Ohms) S/N Ratio: 92 dB THD: <.008% Power: 15 VDC (Adapter included) Size: 6.75 x 1.75 x 4.75"