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“This one is special. If amplifiers were akin to people, the Aurorasound HFSA-01 might be Garland or Sinatra, born and bred to perform. ”
This model supports speakers with an impedance range of 4Ω to 8Ω and includes a headphone output.
The front panel is adorned with Mahogany wood on both sides, enhancing its retro appearance and creating a relaxing atmosphere for a more enjoyable audio experience. Although the HFSA-01 is designed with an orthodox configuration, it meets the basic requirements for sound quality and overall performance across a wide range of sources, from high-resolution digital to analog records, catering to any generation and age group.
The output vacuum tube EL84, a pentode equivalent to the 6BQ5, operates in a push-pull configuration, delivering extremely low distortion and excellent frequency characteristics with ultra-linear connections. The driver for the EL84 is the well-known Texas Instruments OPA604A, a high-precision audio op-amp. Aurorasound has developed a perfect phase inverter circuit with the OPA604A to drive the push-pull operation in the most ideal way.
The tone-control section employs a CR-type circuit for easy adjustments, achieving richer bass and more comfortable treble to match listeners' sound preferences, even with small speakers. The phono equalizer uses Linear Technology's semiconductor to achieve an excellent signal-to-noise ratio with an NF-type circuit configuration.
The power supply section is completely isolated between the vacuum tube and semiconductor components, eliminating any interference regardless of volume level and frequency range. The rectifier uses a super low-noise silicon carbide diode from Rohm.
The output transformer and power supply transformer are custom-designed by Aurorasound and manufactured by a Japanese company. This model also employs carefully selected high-quality capacitors and resistors.
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Input: Phono-MM, Gain40dB — Cartridge load resistance 47kΩ, RIAA +/-1ｄB — RCA unbalance, CD, LINE-1, LINE-2
TONE Control: BASS +/-12dB, TREBLE +/-12dB,
Output: Max 14W + 14W at 8Ω speaker
Frequency response: 10Hz ~ 40kHz, -3dB, Tone Flat
THD+N: 0.08％, 1kHz, 2W, A-weighted
SNR: 93dB, LINE IN-OUT
Functions: TONE control pass DIRECT SW, Stereo/Mono, Headphones output
AC voltage: USA model AC120V, Europe/Asia model AC220V, 240V
Power consumption: 150W
Size, Weight: W360 x D320 xH145mm max, 10.3kg
