Conrad Johnson EV-1 Phono Preamp

For your consideration, this is a near mint condition
Conrad-Johnson EV-1 (TUBE) Phono Preamp, 
complete with factory shipping carton, power cord, sorry no owner’s
manual.

The EV1 was a separate phono equalization preamplifier
designed to provide the additional gain and RIAA equalization that modern phono
cartridges require. Based on the circuit used in conrad-johnson’s acclaimed
Premier Fifteen, the EV1 used a single-ended triode input amplifier comprised
of both sections of a miniature twin–triode tube connected in parallel for
reduced noise. A second single-ended triode amplifier provided added gain. A
passive network of precision components between these two stages set the
required frequency equalization. A direct coupled cathode follower output stage
yielded a low output impedance. The EV1’s circuit employs no negative feedback
loop. The EV1 was a simple, low-noise, high-gain device well suited for use
with a wide range of phono cartridges of both moving magnet and moving coil
types.

SPECIFICATIONS:

Gain: 49 dB

Phono Overload: 200 mV

Phono Equalization: within +/- .25 dB of RIAA

Hum and Noise: 78 dB below 10mV input

Phase: phase correct

Mechanical: 14.375D x 19W x 3.315H inches

Weight: 14.5 lbs.