the many gifts of music… and
of sound with sight… enjoyed
by all, all of the time
through innovative, knowledgeable, high value, high-fidelity A/V system designs.
One of the best pre-amplifiers ever made!
Denon DRA-2000 preamplifier with MM/MC phono pre-preamp
is the preamplifier used in the Reference System at Acoustic Transducers
Laboratories. We have upgraded the preamplifier to one that is currently
available for sale.
The Denon PRA-2000 is a combination of the most expensive separate preamplifier with the most expensive moving coil pre-preamplifier Denon produced. It was created during the time when Japanese high-end audio manufacturers competed with companies like Mark Levinson, except those products were much less expensive than the American counterparts. The equivalent made today will cost about $6,850 (Halo JC 2 BP Preamplifier and JC 3 Phono Preamplifier – the most expensive preamplifier and the most moving coil pre-preamplifier made by Halo by Parasound), but they are not housed in that beautiful lacquered Rosewood case that the Denon is.
The characteristic sound of Denon products have always been smooth. And with this pre-amp, that sound has been continued only more so, i.e. it has a much greater band-width and dynamic range than typical Denon products with that being a very hard task to achieve because usually, those performance charateristic cause a unit to sound harsh in the deep bass as Harman-Kardon units do or ring in the high frequencies as Onkyo units do; wereas most other units do not sound as good as any of these three.
But, there is a problem.
is intermittent in operation, so you should be either technically inclined or
willing to take it to a GOOD electronics repair shop. And to respect and
resurrect the full superior performance of it, you should replace all of the
electrolytic capacitors – fortunately, those type of caps are relatively
cheap, but get good ones, i.e. don’t go to Radio Shack of them.
main design strengths of the Denon PRA-2000 (like that of Mark Levinson type
products, and those of Halo and Parasound) are from the minimalist/quality
design approach, i.e. having no tone or loudness controls, having a recording
output bypass, using very high quality parts (including using an Alps
potentiometer for the volume attenuator), and using a very high current power
Item: Control amplifier (Preamplifier)
Preamplifier (Phono 3)
sensitivity/impedance 0.125mV/100 ohms
permissible input 19mV (1k Hz)
0.003% or less (20 - 20k Hz)
response 20-100k Hz ±0.2dB
to noise ratio (IHF-A) 79dB
conversion noise level -157dBV
70dB or more (20 - 20k Hz)
Gain (only head amplifier part): 26dB
Preamplifier (Phono1, 2)
change to 100 ohms is possible for Phono2.
permissible input 380mV (1k Hz)
maximum except take-off/output power 23V/150mV
0.002% or less (20 - 20k Hz, 4V output)
deflection: 20Hz-100k Hz ±0.2dB
to noise ratio (IHF-A) 86dB
100dB or more (20 - 1k Hz), 90dB or more (20k Hz)
Gain 35.6dB (1k Hz)
sensitivity/impedance Tuner, AUX, Tape 1, 2 150mV/50kohm
Maximum permissible input 23V
maximum except take-off/Output power 25V/1.5V
0.002% or less (20 - 20k Hz, 3V output)
response 10Hz-100k Hz+0 -0.1 dB, 10-500k Hz +0 -1 dB
to noise ratio (IHF-A) 105dB or more
(20 - 20k Hz) 100dB or more (Volume MAX), 80dB or more (Volume-20dB)
- 20dB & -infinity
Filter 16Hz, 12 dB/oct
distortion: 0.003% or less
distortion 0.002% or less
semiconductor used Transistor: 149
outlet Power-switch linkage: Two lines
un-interlocking.: One line
consumption 38 W
17.9 inches width, 5.2 inches height, 14 inches depth
Weight: 23 pounds, 2 ounces
Rutten, Senior System Designer
Rock, TX 78681-1001
General e-mail: info@AcousticTransducersLaboratories.com
Closed: Sunday & Monday
2014 © Copyrighted by Craig Rutten. All rights reserved. Background tile from http://www.grsites.com.
Last updated: December 23, 2013 .