Four
Critical Performance Areas
The SP-10
have been widely acclaimed as representing the state-of-the-art. In music
reproduction and each of these preamplifiers can provide the critical listener
with true reference sound quality in the four critical areas of performance.
Clarity -
Providing a clarity of sound that immediately impresses the listener. Audio
Research preamplifiers are totally absent of the "heaviness" or
"veiling" of sound present in other designs. There is also a notable
lack of "hardness", "edge" and "grain" that masks
fine detail in other preamplifiers.
High
Definition _ While other preamplifiers obscure important musical information,
Audio research preamplifiers reproduce all of the subtle colors, shadings and
ambient detail that create the illusion of a "you are There"
performance. The SP-10 effortlessly sort through complex musical material
placing every instrument and voice onto the proper acoustic stage. This High
Definition quality is a hallmark of all Audio Research products.
Harmonic
Integrity - Audio Research preamplifiers provide the listener with a unique
sense of "harmonic rightness". Delicate harmonic structures essential
to musical accuracy remain wholly intact, creating a musical performance with a
sense of "aliveness".
Dynamic
Expression - Audio Research preamplifiers ecel in reproducing a musically
accurate dynamic range. Highly stable power supplies and essentially
overload-proof output sections result in preamplifiers that reproduce the
guietest notes to the loudest and most complex musical passages. Separation of
instruments and voices remains intact at every level without
"smearing" or collapse of sound field.
Features
Automatic
muting for continuous protection
Front panel
muting for repeat settings, interruptions, etc.
Front panel
power switch for activating 1600 watt capacity back-chassis, plug-in power
receptacles.
Selectable
front panel impedance matching for optimizing moving coil and moving magnet
cartridge performance
Front panel
gain selection for matching low output or high output cartridges
Front panel
"bypass" switch for optimizing performance
Sonically
selected components and near military grade construction
Specifications
Frequency
Response:
High Level
: + .25 dB; 5 Hz - 30 kHz
Magnetic
Phono : + ,25 dB of RIAA, 30 Hz - 40 kHz
Harmonic
Distortion: less than ,01% at 2V RMS
output, 20 Hz -20 kHz
Input
Impedance:
High
Level : 50 k Ω, all inputs
Magnetic
Phono : 10,30, 100, 10 k, 47 k Ω (selectable)
Noise:
High Level
: 250 µV RMS maximum residual unweighted
wideband noise
Magnetic
Phono : 2 µV RMS above 1 kHz
Dimensions
(W x Hx D): 19" x 5,25" x
10,25"