Boulder 1108 Phono Preamplifier

Power. Finesse. Extended frequency response. Speed. Delicacy. Control. Spaciousness. Precise imaging. Rhythm. Dynamics. Involvement. Musicality. The list goes on. Selecting only a few of these traits and asking any audio product to achieve them is quite a daunting task. Looking at the list and then listening to the 1108 Phono Preamplifier, it immediately becomes apparent that it can do all of them. With ease.

For quite a lot of people, vinyl or phono playback was the first time they had heard of Boulder. The degree to which our phono preamplifiers pushed the limits of analog performance forward was shocking to many and it drew quite a lot of attention. Decades later the 1108 is doing it all over again. With ease.

Features

Two pairs of balanced inputs for systems with more than one turntable, cartridge, or tonearm

Traditional RIAA equalization as well as EMI, FFRR (London/Decca), and Columbia EQ settings for LPs made before 1955

Low-cut filter to eliminate low frequency noise caused by turntable rumble or damaged LPs

Fully-balanced input circuitry to take advantage of a phono cartridge's naturally balanced output

Flexible resistive and capacitive cartridge loading and setup (MC and MM) via removable rear panel Personality Cards

Proprietary 985 gain stage is engineered specifically for the 1108 and encased in a housing machined from a solid block of aluminum

Gain settings of 70 dB (MC) and 44 dB (MM) enable use with virtually any phono cartridge

Interlocking casework damps vibration and shields the delicate analog phono signal inside

Two pairs of balanced outputs to connect preamplifiers and recording devices at the same time

Specifications

INPUTS

2 pairs balanced,

converts to unbalanced

OUTPUTS

2 pairs balanced,

use as Main or Record

INPUT IMPEDANCE, MAXIMUM

MC: 1000 ohms

MM: 47k ohms

1 KHZ GAIN, RIAA

MC: 70 dB

MM: 44 dB

FREQUENCY RESPONSE, RIAA

±0.10 dB,

20 Hz to 20 kHz

DISTORTION, THD

+0.01%

NOISE (EIN), MC

98 nanovolts flat,

20 Hz to 20 kHz

MAXIMUM OUTPUT LEVEL

16 Vrms

CROSSTALK, L TO R OR R TO L

-100 dB or better,

20 Hz to 20 kHz

WEIGHT

37 lbs. (16.8 kg),

Shipping: 51 lbs. (23.2 kg)

POWER REQUIREMENTS

100-240 VAC, 50-60 Hz

POWER CONSUMPTION

32W