Boulder 810 Brochure

810 Stereo Preamplifier

Placing the best performance and control within your reach

The best performing musical systems require the
highest performing preamplifiers. Music should come
alive and draw you in, completely unobscured by the
electronics reproducing it.

Boulder accomplished this goal in 1996 with the
development of the 2010 Stereo
Preamplifier, an effort to see
what was possible if any and all
constraints were removed from
the engineering process. The
2010 features technology that
allowed it to break new ground
in performance, including the 993
gain stage and the solid state
volume control. The 2010 has
gathered praise, acclaim, and numerous awards
world-wide for its performance excellence–it is
regarded as the best preamplifier in the world.

In 2003, Boulder followed up with the 1010 Stereo
Preamplifier. The 1010 features the 983 gain stage
and uses the same volume control system in a single
chassis. This brought Boulder’s superior performance
to you in a simpler and much more compact package.

By drawing on the technology and experience
gained in the design of these products, Boulder
has introduced the 810 Stereo Preamplifier. The 810
maintains Boulder’s familiar visual appeal, quality
standards, and peerless reliability, yet makes Boulder’s
universally renowned performance available to a
much greater audience than ever before.

Like its predecessors, the 810 Stereo Preamplifier
features balanced, dual-mono, three-stage
instrumentation-style circuitry. This eliminates
any trace of noise, distortion, or impedance issues
that may affect the delicate audio signal. Musical

dynamics and detail emerge
effortlessly from a black and
silent background. Images are
superbly defined and separated
with a wealth of revealed low-level
information.

Two pairs of differentially

balanced XLR output connectors
allow the 810 Stereo Preamplifier to be used in a
traditional, a bi-amplified system, or an amplifier and
subwoofer combination for the ultimate reproduction
of music and soundtracks. This flexibility allows you
to expand your system in the future and hear your
favorite recordings better than ever.

A fully filtered and regulated power supply
provides pure power for all of the circuitry encased
within the chassis. Dual toroidal transformers, one
for the analog audio circuitry and one for the digital
logic circuitry, maintain the best possible noise
isolation between the two parts of the preamplifier.
The resulting performance is precise, powerful, and
immediate.

Boulder’s proprietary 0.5 dB stepped volume
control system performs with unmatched accuracy.
This system produces the most sonically clear, yet
reliable, method of attenuating the analog audio
signal. The absence of distortion and noise from
the mechanical sliding wiper used in a continuous
potentiometer makes for a stunning improvement
in clarity. Sonically, Boulder’s volume control has no
equal.

The 810 Stereo Preamplifier also features the
Boulderlink system for complete system control and
communication with other Boulder components. All
necessary connections for external use and control are
provided–an input for remotely located IR and a 12V
trigger output for remote turn on of amplifiers.

An illuminated alpha-numeric display allows you
to name and program each input of the 810 Stereo
Preamplifier. Each selection can also easily be read
from across the room. Starting volume levels, gain
matching, input balance, polarity, and Theater Mode
can also be programmed for each individual input.

Theater Mode allows the 810 to be integrated into
a home theater system to seamlessly switch from
audio to theater listening without compromising the
performance of either.

All of the 810 Preamplifier’s machined metalwork
is designed in Colorado and fabricated on Boulder’s
own CNC machining centers. All electronics are
engineered and
produced in Boulder
and tested at every
step of production.
Each piece of circuitry
and metal is held to the strictest quality standards,
assuring the greatest residual value for any investment
in Boulder.

The 810 derives performance and refinement
from its predecessors in a way no other preamplifier
possibly could. By using the expertise gained from the
proven 2010 and 1010, Boulder has created yet another
preamplifier without peer in its price class.

SPECIFI CATIONS

ANALOG INPUTS 4 Balanced Line
OUTPUTS 2 Balanced Main, 1 Record
VOLUME 100 dB range in 0.5 dB steps
MAX GAIN 20 dB
MAX OUTPUT 14.0 Vrms
CLIP TO NOISE 118 dB
FREQ RESPONSE +0, -0.03 dB, 20 Hz to 20kHz
THD+N, 2V OUT Less than 0.0045%
SYSTEM Boulderlink, 12V Trigger
SIZE 17.00 wide, 5.50 high, 15.25 deep (in.)
WEIGHT 18, Shipping: 26 Pounds
POWER 120 VAC, 50-60 Hz, 22W Max

Bo uld er A mpl ifiers, Inc.

32 35 P rai rie Ave. • Boulder, CO 8 030 1

30 3-4 49- 822 0 • www.boulderam p.com