PRESONUS 4 CH HEADPHONE AMP 1/3U

Are you and your session players and bandmates tired of straining to hear underpowered headphones? We were too. That’s why Jim Odom and his jambalaya-fueled team of engineers designed 150 mW headphone amps for the HP4 headphone-distribution system. These headphone amps are not just loud enough for session and stage use, they’re loud enough to explode the oysters in a Po’ Boy sandwich. Yet the sound is clear and clean, with a wide dynamic range. At last, everybody will be able to hear—assuming they are capable of hearing. Be careful with that level control! Features Input/Output 4 screaming-loud (150 mW per channel) stereo ¼” headphone outputs (front panel) 2 balanced ¼” line outputs (monitor outputs) 2 balanced ¼” line inputs Meters, Controls, and Features Headphone level control for each channel Mono summing switch for each channel Monitor level control Monitor mute switch Daisy-chain multiple units via monitor outputs Physical Compact 1/3U rack-mount chassis Sealed, detented, metal rotary controls External 16 VAC power supply Inputs Connector Type ¼” TRS, balanced THD+N 0.0025%, 1 kHz, unity gain Max Input Level +18 dBu, <0.5% THD+N, unity gain Input Impedance 10 kO Frequency Response 20 Hz - 20 kHz, ±0.5dB Monitor Outputs Connector Type ¼” TRS, asymmetrical, impedance-balanced THD+N 0.0025%, 1 kHz, unity gain Max Output Level +18 dBu, <0.5% THD+N Output Impedance 51O Frequency Response 20 Hz - 20 kHz, ±0.5dB Headphone Outputs Connector Type ¼” TRS, stereo Max Output Power 130 mW/Ch., <0.5% THD+N, 60O load Frequency Response 20 Hz - 20 kHz, ±0.5 dB, 60O load Headphone Impedance Working Range 32O - 600O Power External Adapter Type +12 VDC, 1000 mA, center pin positive Physical Dimensions 1/3U rack-mount (with standard rack tray, not included) Height 1.75” (44.45 mm) Depth 5.5" (139.7 mm) Width 5.5” (139.7 mm) Weight 5 lbs (2.27 kg)