| Rolls HA243 4-Channel Studiophile Headphone Amplifier HA243 Free Express Shipping! Rolls HA243 4-Channel Studiophile Headphone Amplifier Compact Metal Chassis, Mono or Stereo Operation, Selectable A/B Input Channels, 1/4", RCA, and 3.5mm Inputs, 1/4" and 3.5mm Outputs, Individual Level Controls, Made in USA ... more Rolls HA243 4-Channel Studiophile Headphone Amplifier HA243 Free Express Shipping! Rolls HA243 4-Channel Studiophile Headphone Amplifier Compact Metal Chassis, Mono or Stereo Operation, Selectable A/B Input Channels, 1/4", RCA, and 3.5mm Inputs, 1/4" and 3.5mm Outputs, Individual Level Controls, Made in USA | | $149.00 FREE shipping go to store |