presonus hp4 headphone impedance

PreSonus HP4 4 Channel Headphone Amplifier (1/3U) ; Output Impedance, 51Ω ; Frequency Response, 20 Hz - 20 kHz, ±0.5dB ; Connector Type, ¼” TRS, stereo ; Frequency 

In The Box · Connector type: 1/4" TRS, asymmetrical, impedance-balanced · THD+N: 0.0025%, 1 kHz, unity gain · Max output level: +18 dBu, <0.5% THD+N · Output 

The HP4 says the Balanced TRS output is 51 ohms. I don't think that means the headphone jack impedance is 51 ohms. I think that is for the jacks 

Connector Type, ¼” TRS, stereo ; Max Output Power, 130 mW/Ch., <0.5% THD+N, 60Ω load ; Frequency Response, 20 Hz - 20 kHz, ±0.5 dB, 60Ω load ; Headphone Impedance 

The PreSonus HP4 Discrete 4-Channel Headphone Amp allows control over control room monitors with a separate volume knob that can be muted using the Monitor Mute button. 1/3 rackspace. Accepts balanced/unbalanced inputs and outputs (1/4" TRS). Input can either be set to stereo or mono (the mono selector button on the front channel simply copies

PreSonus HP4 4-Channel Compact Headphone Amplifier Key Features: 4 screaming-loud (130 mW per channel) stereo headphone amps Wide dynamic range Can serve as control room monitor control w/ level control & Monitor Mute button Daisy-chain multiple units via 2 balanced ¼” monitor outputs Compact 1/3U rack-mount chassis Mono summing switch 2 balanced ¼”

The PreSonus HP4 ensures that they get plenty of volume in their headphones. Four discrete amplifiers allow you to route monitor mixes to up to four performers. output impedance of headphone jacks: 51 ohms; headphone impedance range: 32-600 ohms; includes AC power supply; 5-1/2"W x 1-3/4" H x 5-1/2"D; weight: 5 lbs. warranty: 1 year; Our 60

The hd6xx series seems to prefer an output impedance of around 50ohm (see critical dampening)) The hp4 power supply is also +/- 15v internally, hence you can probably swap that ac adapter between l30 and hp4. Internally the amp is very

Get the HP4 and hear everything loud and clear. You owe it to your music. 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

Headphone Impedance Working Range 32Ω - 600Ω 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)

Includes four PreSonus HD9 closed-back professional studio headphones and a PreSonus HP4 four-channel headphone amplifier. HD9: 45 mm dynamic, neodymium drivers; closed acoustic design; tailored frequency response from 10 Hz to 26 kHz with accurate low frequencies; high power handling (900 mW per channel into 40 ohms).