Accuphase C-2410 Brochure
● Revolutionary AAVA volume control ● Separate power transformers
for left and right channels ● Selectable preamp gain ● Fully modular
construction with individual left/right amplifi er units on motherboard
● Logic-controlled relays for shortest signal paths ● Independent phase
selection for each input position ● Optional phono equalizer unit allows
analog record playback ● Side panels with elegant persimmons wood fi nish
A stereo control center of the next generation – Further evolved
AAVA type volume control. Complete dual mono construction
with separate AAVA and other amplifi cation modules and separate power supplies. Overall preamp gain selection and independent phase selection for each input position. Optional phono
equalizer unit allows high-quality playback of analog records.
The C-2410 inherits the superb design technology of
the C-2810, including the improved AAVA (Accuphase
Analog Vari-gain Amplifi er) volume control with similar
specs and confi guration. AAVA is a revolutionary
concept that takes a radically different approach
from conventional volume controls. The result is
high performance and sound quality far exceeding
conventional designs.
AAVA does not use variable resistors, which brings
a number of distinct advantages:
response does not change, regardless of the volume
setting.
S/N ratio is outstanding. 3 Distortion is
2
reduced to an absolute minimum.
left/right level differences (tracking error).
channel crosstalk is minimized. Another benefi t of
AAVA is the fact that only highly reliable electronic
components are used. Mechanical wear ceases
to be a problem, ensuring that the outstanding
performance and sound quality of the amplifi er will
remain undiminished for many years to come. Unlike
conventional digital volume controls, AAVA operates
through purely analog processing. The operating feel
using a volume knob on the front panel also is exactly
the same as with other high-end stereo components.
The power supply section of the C-2410 employs
two separate transformers, one for each channel.
Filtering capacitors and all other parts of the power
supply are duplicated for left and right. What's more,
the AAVA circuitry, balanced output circuits, and other
unit amplifi ers are also entirely separate for the two
channels, arranged on a high-quality motherboard.
This fully monaural construction prevents unwanted
crosstalk and interaction both on the electrical and the
physical plane.
As can be expected of a control center, the
C-2410 offers a full complement of balanced and
unbalanced input and output connectors. Flexibility is
further enhanced by features such as tone controls,
loudness compensation, recorder functions, subsonic
fi lter, overall gain selection, EXT PRE connectors
for combination with another preamplifi er, and
independent phase selection for each input position.
An optional phono equalizer unit is available for
playback of analog records with ultimate sound
quality.
Frequency
1
There are no
4
Left/right
5
■ Logic-controlled relays assure high
sound quality and long-term reliability.
The strategically placed relays of the C-2410
prevent any signal degradation that could
occur if the signal has to travel a long way
for input and output connection and function
switching. Optimum signal fl ow is maintained
at all times.
■
EXT PRE function allows use of external preamplifi er.
■ Selectable preamp gain.
The overall gain of the preamplifi er can be set to 12 dB, 18 dB,
or 24 dB.
■ Independent phase selection for each input position.
The selected phase setting is memorized for each input position
separately. The on/off status of a LED indicator shows the
respective setting.
■ Dedicated headphone amplifier optimized for sound
quality.
■ Versatile array of balanced and unbalanced input and
output connectors.
■ Aluminum-base side panels with persimmons wood fi nish
provide a striking visual appeal.
■ Tone controls using summing active fi lters for highest
sound quality.
■ More versatile features:
● Provisions for recording and playback with two recorders
● Subsonic fi lter removes ultra low frequency noise
● Loudness compensator augments bass impact at low listening
volume
● Attenuator (-20 dB)
Frequency response/subsonic fi lter
response characteristics
Loudness compensator characteristics
Balanced input and
output connectors
Input
-
A1
VR1
VR2
Principle of tone control circuitry
(Summing active fi lter type)
Unbalanced input and
EXT PRE function
and phase selector
button, with LED
indicators
F1
F2
Tone control characteristics
output connectors
Gain selector
Output
-
A2
LEFT
CHANNEL
INPUTS
CD-BAL
LINE-BAL
RECORDER
RIGHT
CHANNEL
AD 1
AD 2
TUNER
LINE 1
LINE 2
LINE 3
REC
PLAY
CD
BALANCED UNBALANCED
R
AMPLIFIE
RECORDER
OPTION: Phono Equalizer Unit AD-2800
(Accuphase Analog Vari-gain Amplifier)
V- I Converter
INPUT
SELECTOR
RECORDER
PHASE
MODE
SUBSONIC
FILTER
BUFFER
BUFFER
SUBSONIC
FILTER
AAVA
CPU
Same as LEFT CHANNEL
I- V Converter
Volume
Balance
Attenuator
Block Diagram of C-2410
Balanced
Output
Amplifier
-1
COMPENSATOR
TONETONE
GAIN
ADDER ADDER
HIGH-PASS
FILTER
TONE CONTROL TREBLE
LOW-PASS
FILTER
TONE CONTROL BASS
CURRENT
FEEDBACK
CURRENT
FEEDBACK
HEADPHONE
AMPLIFIER
-1
OUTPUT
EXT PRE
OUTPUT
OUTPUT
OUTPUT
EXT PRE
from RIGHT channel
BALANCED
UNBALANCED
BALANCED
UNBALANCED
1
2
1
2
HEADPHONE
OUTPUT
LEFT
CHANNEL
EXT PRE
INPUTS
LEFT
CHANNEL
OUTPUTS
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