The increased popularity of high-resolution digital sound sources has resulted in a growing need for high-quality sound with balanced hi-fi headphones. To meet this need, Audio-Technica is offering the AT-BHA100 balanced headphone amplifier and AT-DAC100 digital-to-analogue converter, ideal for use with hi-fi headphones such as the ATH-ADX5000, the ATH-AW Series, and the ATH-MSR7b. This compact desktop unit is compatible with Direct Stream Digital (DSD) and other high-definition formats to reproduce every detail of the original recording.
– Hybrid system with vacuum tubes and power transistors – Four independent preamp vacuum tubes – Four power transistors, one for each powered amp circuit – Four completely independent amplifier circuits – Operational amp that highlights the superiority of vacuum tubes – Relay switches designed specifically for vacuum tubes – High-quality audio-grade components – Film capacitors from WIMA and Shinyei Capacitor – Four-layer board structure – Gain selector switch – Two balanced outputs – Two 6.3 mm (1/4 ∫) unbalanced outputs – Line-through output – Beautiful vented design showcases the internal vacuum tubes – Horizontal or vertical orientation for greater layout flexibility – External AC adapter
AT-BHA100 Specifications
Load Impedance
16 – 600 ohms
Frequency Response
Line input: 10 Hz to 100 kHz (0, -3 dB at 32 ohms and 10 mW output); Balanced input: 10 kHz to 100 kHz (+0.5, -3 dB at 32 ohms and 10 mW output)
Total Harmonic Distortion
< 0.25% (20 Hz to 20 kHz at 32 ohms and 1 mW)
Input Connections
Line input, Balanced input
Output Connector
6.3 mm headphone output, Balanced output (4.4 mm/XLR 4-pin)
Channel Separation
6.3 mm headphone output: 75 dB (load: 32 ohms, 1 kHz) Balanced output: 100 dB (load: 32 ohms, 1 kHz)
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)
