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Audio-Technica Balanced Headphone Amplifier
At a Glance
Product Dimensions 1.73"h x 8.27"w x 10.47"d
The AT-BHA100 balanced headphone amplifier is designed to deliver unmatched audio quality from high-resolution sound sources, and is ideal for use with hi-fi headphones such as the ATH-ADX5000, ATH-MSR7b, and those in the ATH-AW Series.Read More
Get to know this product.
Product Overview
Product Overview
The AT-BHA100 balanced headphone amplifier is designed to deliver unmatched audio quality from high-resolution sound sources, and is ideal for use with hi-fi headphones such as the ATH-ADX5000, ATH-MSR7b, and those in the ATH-AW Series. This compact desktop unit is compatible with Direct Stream Digital (DSD) and other high-definition formats to reproduce every detail of the original recording.
The AT-BHA100 features a hybrid system of vacuum tubes and power transistors to enhance the beauty and warmth of amplified sound. It employs four completely independent amplifier circuits, a high-quality New Japan Radio MUSES8820 operational amplifier, and specially designed low-noise relay switches to emphasize the depth and warmth of vacuum-tube sound. A four-layer board structure with high-quality audio-grade components from Nichicon, WIMA, and Shinyei Capacitor ensures rich, natural audio.
The amplifier is equipped with a 4.4 mm TRRS jack and a 4-pin XLR terminal, plus a low/high gain selector switch, allowing it to accommodate a wide range of balanced headphones with varying sensitivities and impedances. It also has two 6.3 mm (1/4") outputs with independent volume controls that can be used simultaneously for comparative listening.
Hybrid system with vacuum tubes and power transistors enhances the beauty and warmth of amplified sound
Four independent JJ Electronic ECC83S preamp vacuum tubes deliver superb depth and sense of presence in the amplified sound
Four power transistors (one for each powered amp circuit) are capable of high-power performance to handle the wide dynamic range of sound sources with high sampling rates
Completely independent four-circuit structure, with separate left/right amplifier circuits and balanced hot/cold circuits, helps suppress crosstalk for a rich sound field
High-quality New Japan Radio MUSES8820 operational amplifier highlights the depth and warmth of the vacuum-tube sound
Specially designed low-noise relay switches offer excellent dynamics that emphasize the spaciousness and vibrancy of the sound
Nichicon chemical capacitors contribute to the low-frequency characteristics of the audio, leading to powerful bass
WIMA and Shinyei Capacitor film capacitors create smooth, low-distortion sonic characteristics for natural, clear sound
Four-layer board structure, with independent layers for signal circuits, power circuits, and ground circuits, ensures greater signal stability for rich, low-frequency control
Low/high gain switch offers support for a wide range of headphones with varying sensitivities and impedances
Two balanced outputs – 4.4 mm TRRS jack and 4-pin XLR terminal – are compatible with a wide range of balanced headphones
Two 6.3 mm (1/4") outputs can be used simultaneously with independent volume controls
RCA line-through output allows for switching between headphones and powered speakers
All sides of the amplifier are vented for improved dissipation of heat and a superior signal-to-noise ratio through reduced thermal noise
Compact unit can be set up vertically or horizontally
Large-capacity external AC adapter separates the power supply from the main unit for reduced noise
Useful Documents
Specifications
General Specs | |
| Depth (in.) | 10.47 |
| Height (in.) | 1.73 |
| Manufacturer Warranty | 1 Year Limited |
| Color Finish Name | Black |
| Width (in.) | 8.27 |
| Voltage | 100/120 |
| Frequency | 50/60 |
| Wattage | 25 |
| Amp | 2.4 |
| Product Weight (lbs.) | 3.97 |
Headphone Amplifier | |
| Corresponding Headphone Impedance | 16 – 600 ohms |
| Instantaneous Maximum Output Level | 6.3 mm headphone output (10%, 1 kHz): 680 mW + 680 mW (16 ohms load) 320 mW + 320 mW (32 ohms load) 240 mW + 240 mW (64 ohms load) 30 mW + 30 mW (600 ohms load) Balanced output (10%, 1 kHz): 1,500 mW + 1,500 mW (16 ohms load) 1,200 mW + 1,200 mW (32 ohms load) 800 mW + 800 mW (64 ohms load) 120 mW + 120 mW (600 ohms load) |
| Frequency Response | Line input: 10 Hz – 100 kHz (0, -3 dB at 32 ohms 10 mW output); Balanced input: 10 Hz – 100 kHz (+0.5, -3 dB at 32 ohms 10 mW output) |
| Total Harmomic Distortion | <=0.25% (20 Hz - 20 kHz at 32 ohms and 1 mW output) |
| Gain | 6.3 mm headphone output: 10 dB (high gain), 1.5 dB (low gain) Balanced output: 16 dB (high gain), 7 dB (low gain) |
| Noise | 6.3 mm headphone output: -100 dBv (A-weighted high gain), -103 dBv (A-weighted low gain) Balanced output: -92 dBv (A-weighted high gain), -95 dBv (A-weighted low gain) |
| Separation Between Channels | 6.3 mm headphone output: 75 dB (load: 32 ohms, 1 kHz) Balanced output: 100 dB (load: 32 ohms, 1 kHz) |
| Analog Input Connector | Line input (pin jack) x 2 Balanced input (XLR combo connector) x 2 |
| Output Terminals | 6.3 mm stereo headphone output × 2 CLR 4-pin balanced stereo headphone output 4.4 mm balanced stereo headphone output Line output (pin jack) x 2 |
| Input Selector (front panel) | Line input, balanced input |
| Output Selector (front panel) | 6.3 mm headphone output, balanced output (4.4 mm/XLR 4-pin) |
| Power Supply | 100 – 120V AC, 50/60 Hz, 15V DC/2.4 A (AC adapter provided) |
| Power Consumption | 25 W (max) |
| Dimensions | 44 mm (1.73") H × 210 mm (8.27") W × 266 mm (10.47") D (excluding protrusions) |
| Weight | 1.8 kg (63.5 oz) |
| Accessories Included | AC adapter, power cable, feet (6), stands (2) |
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