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Rolls HA43 User Manual

Ha43 pro, C h. s tud io hea dph one a mp, Ha43 pro 4 channel headhone amp

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HA43 Pro 4 Channel Headhone Amp

- Studio

- School

- Broadcast

... anywhere you need four channels of

clean, loud headphone amplification.

HA43 Pro

4-C

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HA43 Pro

4-Channel Studio Reference

Headphone Amplifier

Rolls Corporation

Salt Lake City, UT

9/06

INTRODUCTION

Thank you for your purchase of the HA43Pro Reference Head-

phone Amplifier. The HA43Pro drives up to four pairs of stereo

headphones for high qualituy audio monitoring. The unit is intended

for sound reinforcement, studio, choir, install, and other applications

where a smaller size is desired without sacrificing audio quality.

SPECIFICATIONS

Input Impedance: 100k Ohms unbalanced

Max Input Level: +14 dBV

Input Connectors: TRS Stereo 1/4” phone, Dual RCA

Outputs: 4 TRS Stereo 1/4”, 4 TRS Stereo 1/8” (3.5mm)

Output Impedance: 51 Ohms each output

Max Gain: 20 dB/Channel

S/N Ratio: >90 dB

THD: < .008%

IMD (SMPTE): <.008%

Power: 12 VDC (Rolls Model PS27)

Weight: 1 lb (.45 kg)

Size: 4.15 x 3.45 x 1.16 (W x H x D)

DESCRIPTION

INPUTS: 1/4” Stereo TRS jack, and Dual RCA jacks for connec-

tionto the stereo line-level signals to be monitored.

12 VDC PWR: Connects to the Rolls PS27 12 VDC (outside of the

barrell positive) adapter.

CHANNEL LEVELS: Sliders 1 - 4 adjusts the level of the indicated

channel.

OUTPUTS 1 - 4: 1/4” and 1/8” (3.5mm) TRS stereo jacks for con-

nection to headphones or earphones.

WARRANTY INFO

Please visit our website, www.rolls.com, for the Rolls 1 Year War-

ranty information and registration.

SCHEMATIC

The HA43 Pro is a full frequency response four

channel headphone monitoring device designed

for the recording studio, or other professional

applications like listening rooms and monitoring

stations. Each output boasts a whopping 20 dB of

clean channel gain.

• Stereo 1/4” and Dual RCA Inputs

• Slider Volume controls

• AC adapter included

• Full frequency response

• Lots of output level.... it’s loud!