Audio-Technica AT-HA5050H Bruksanvisning
Audio-Technica
Hörlursförstärkare
AT-HA5050H
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Sida 1/9
Manufactured by:
Audio-Technica Corp.
2-46-1 Nishi-naruse, Machida, Tokyo 194-8666, Japan
Tel.: +81-42-739-9111 Fax: +81-42-739-9110
Audio-Technica (Greater China) Limited
Unit K, 9/F., Kaiser Estate (Phase 2), 51 Man Yue Street, KL, HK
Tel.: +852 2356 9268 Fax: +852 2773 0811 www.facebook.com/audio.technica.gc
www.audio-technica.co.jp
Design Concept
AT-HA5050H is a reference headphone amplier that is
designed to work with any headphones, not just those
from Audio-Technica. We understand that all headphones
have a distinct sound signature and can perform very
dierently when paired with an amp.
We wanted to make headphones perform at their best,
while also letting the user choose the sound they like.
So we have provided dierent output choices that can
easily alter the sonic characteristics and performance of
the headphones.
Unlike previously released headphone ampliers, the
sux “H” in the model name signies that AT-HA5050H is
a Hybrid amplier that employs a pair of tubes at the
preamp stage and transistors at the power amp stage.
The product with this logo is conformed to
Hi-Res Audio standard dened by Japan Audio
Society. This logo is used under license from
Japan Audio Society.
Main cir cuit board of AT-H A 50 50H
Power swit ch
Power indicat or
Why Hybrid?
Employing tubes in the preamp adds warmth and
depth to the music, while its bipolar transistors
provide distortion-free Class A amplication that is
powerful enough to drive any headphones,
irrespective of their impedance level.
Customized R-Core Power Transformer
The power transformer has been customized and repeatedly
f ine-tuned to enable the hybrid tube headphone amplier
to best exhibit its characteristics.
Digital Circuit Section
USB I/F circuit and DAC are placed inside the shielded
case to eliminate any interference that can cause noise
in the vacuum tubes. The shielded case also blocks
electromagnetic noise from the power transformer.
Power Supply Circuit
Input power is rectied by fast recovery diodes. Each
part of the amplier is individually regulated and powered.
OFC Power Cable
OFC power cable is used to ensure clean delivery of
power supply.
Preamplier Stage
A pair of E88CC vacuum tubes is used to achieve a warm,
mellow sound with reverberation.
Volume Control
The volume control is placed in the center of the signal
path, and it is connected by a shaft to the volume knob.
This design makes the circuit more stable and balanced.
Power Bus Bar
The use of power bus bars strengthens the power supply
to deliver enough power for a rich low frequency.
Power Amplier Stage
The pair of Toshiba bipolar power transistors provides
strong, driving power and high-quality sound.
OFC Headphone Cable
OFC cable is used to deliver an impactful and
detailed sound.
VU Meters
Sifam meters are used for their high reliability.
Electrical Circuit
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Produktspecifikationer
| Varumärke: | Audio-Technica |
| Kategori: | Hörlursförstärkare |
| Modell: | AT-HA5050H |
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