Marantz Professional PHA-3 Portable Stereo Headphone Amplifier

Marantz Professional PHA-3 Portable Stereo Headphone Amplifier

Marantz Professional PHA-3 Portable Stereo Headphone Amplifier

B&H # MAPHA3 MFR # PHA-3
Marantz Professional PHA-3 Portable Stereo Headphone Amplifier

Marantz Professional PHA-3 Portable Stereo Headphone Amplifier

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Product Highlights

  • 3 x Headphone Outputs with Level Control
  • XLR, 1/4", and 1/8" Stereo Inputs
  • 1/4" Loop Output for Daisy-Chaining
  • Single 1/8" and Three 1/4" Outputs
  • Seamless Power Switchover
  • Dual-Color Power LED
  • Low-Battery Power LED Indicator
  • Rugged Aluminum Chassis with Strap Loops
  • Includes External Power Supply
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  • 1Description

The PHA-3 Portable Stereo Headphone Amplifier from Marantz is a field production amplifier that provides three independent headphone feeds from balanced or unbalanced sources. It can be used to drive headphones to high levels with low distortion and is ideal for field broadcast production, portable audio/video production crews, and live sound applications.

Featuring balanced XLR, 1/4", and 1/8" stereo inputs, the amplifier delivers critical audio monitoring even under high SPL conditions. There is a dual-color power LED with a low-battery power indicator. It is built with a rugged metal case and the ability to daisy-chain additional units utilizing the loop outputs. It can run on two AA batteries or the included external power supply.

Three independent headphone outputs with individual level controls
Balanced XLR inputs or 1/4" and 1/8" stereo inputs
1/4" loop output for daisy-chaining additional units in series for extra outputs
Parallel 1/8" and 1/4" outputs with two additional 1/4" outputs
Internal power (2x AA) or external power (5-17 VDC) with seamless power switchover
Dual-color power LED. GREEN indicates power with good battery - RED indicates low battery power (LED turns RED when 4 hours of battery life remain)
Rugged aluminum chassis with strap loops for wearing or mounting
UPC: 694318019474
In the Box
Marantz Professional PHA-3 Portable Stereo Headphone Amplifier
  • 1/4" to 1/8" TRS Adapter Cable
  • Power Adapter
  • Limited 1-Year Warranty
  • Table of Contents
    • 1Description
    Frequency Response 10 Hz to 50 kHz ± 1.0 dB
    Voltage Gain Balanced Line Input
    Loop Out: -3 dB
    Headphone Outputs: 34 dB
    Unbalanced Stereo Input
    Loop Out: -1 dB
    Headphone Output: 35 dB
    Output Clipping Level +18 dBu minimum with 600 Ohms load
    +16 dBu minimum with 300 Ohms load
    Input Clipping Level Line Input (XLR): +24 dB
    Impedance Headphone Output: 200 Ohms
    Loop Out: 200 Ohms
    Line Input (XLR): 22 kOhms
    Stereo/Loop in 1/4" (6.5 mm) 9.1 kOhms
    Stereo/Loop in 1/8" (3.5 mm) 9.1 kOhms
    Dynamic Range > 120 dB
    Total Harmonic Distortion (THD) + N 0.03% max (10 Hz to 22 kHz @ +10 dBu input/output level, 300 Ohms load)
    Inputs/Outputs 2 x XLR inputs, electronically balanced
    1 x 1/4" (6.3 mm) TRS line input, unbalanced
    1 x 1/8" (3.5 mm) TRS line input, unbalanced
    3 x 1/4" (6.3 mm) TRS headphone outputs
    1 x 1/4" (6.3 mm) TRS line output, unbalanced
    Internal Voltages ± 15 V regulated
    Power Supply Power adapter: 5 to 17 VDC, center-positive coaxial connector 0.2" (5.5 mm) outer diameter, 0.08" (2.1 mm) inner diameter
    Power Input Requirement 110 to 120 VAC, 60 Hz / 220 to 240 VAC, 50 Hz
    Batteries 2 x AA alkaline batteries
    Battery Life (approx.) 12 hours with one set of 75 Ohm headphones driven; 8 hours with one set of 56 Ohm headphones driven
    Dimensions (W x L x H) 3.7 x 5.6 x 1.7" (94 x 140 x 43 mm)
    Weight 1.2 lb (0.6 kg)
    Packaging Info
    Package Weight 2.35 lb
    Box Dimensions (LxWxH) 9.6 x 7.2 x 3.2"

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