dorokusai
09-08-2007, 07:59 PM
Marantz PM-74D Century - Integrated Amplifier - Black - 9/10 - *POOF!*
This is a classic example of Marantz hi-fi gear from the late 80's, specifically 1988-1989. It was the mid-line model of the new PM series which took its roots from some venerable Marantz such as the 7T pre-amplifier and 1200B integrated amplifier.
It's physically identical to the PM-84D. Internally, the PM-84D offered a trick copper coated chassis, increased capacitance and a encapsulated transformer. The topography of the guts also change but its moreso a by-product of the copper coated chassis and longer heat sink fins. The PM-74D uses as many of the copper screws that could have been used on the PM-84D.....so it's still kinda cool :)
In 1988, Marantz was marketing something called QuarterA which allows Class A amplifier operation at normal listening levels, with Class B transition during high power. At most listening levels you'll be 100% Class A and that's a good thing. That being said, it runs warm by design so keep that in mind in regards to placement of the unit.
They also utilize something akin to the NAD PowerDrive(Envelope) or Onkyo WRAT. The buzzword used by Marantz was "Automatic Voltage Shift Supply". It simply supplies more voltage to the output rails for brief high level passages or transients. That's pretty neat for 1988.
The unit is black and flawless, not a scratch or ding anywhere. The interior is dust free and all connections have been treated with CAIG products. The unit has been checked out by my tech and all is well. I have added roughly 1 lb. of Dynamat Extreme to the inside of the unit. All areas that were easily measured were covered in Dynamat. You will be VERY happy.
Anyways, here's some specifications:
100X2@8(Benchtested - 132x2@8 and 196x2@4) It's 4ohm stable.
6 Inputs (Inc. Tape Loop & Gold Plated Inputs on Phone/CD Stage)
Phono Stage (MM/MC)
AVSS (Automatic Voltage Shift Supply)
QuarterA (Class A Design)
Individual Tone Controls for L&R Channels (Bass & Treble)
Tone Control Bypass
A+B Speaker Outputs
CD Direct Mode
Loudness Contour
2 Switched/ 1 Unswitched Convenience Outlets
Weight = 28 lbs.
Includes: Hi-res copy of Stereo Review - Test Report circa 1988.
This unit was paired with a NAIM CDP running Magnepan 10.1 loudspeakers into dreamland without a complaint. If you have any questions or comments, contact me directly: dorokusai@verizon.net
Thanks for reading :D
571D47MPM E
This is a classic example of Marantz hi-fi gear from the late 80's, specifically 1988-1989. It was the mid-line model of the new PM series which took its roots from some venerable Marantz such as the 7T pre-amplifier and 1200B integrated amplifier.
It's physically identical to the PM-84D. Internally, the PM-84D offered a trick copper coated chassis, increased capacitance and a encapsulated transformer. The topography of the guts also change but its moreso a by-product of the copper coated chassis and longer heat sink fins. The PM-74D uses as many of the copper screws that could have been used on the PM-84D.....so it's still kinda cool :)
In 1988, Marantz was marketing something called QuarterA which allows Class A amplifier operation at normal listening levels, with Class B transition during high power. At most listening levels you'll be 100% Class A and that's a good thing. That being said, it runs warm by design so keep that in mind in regards to placement of the unit.
They also utilize something akin to the NAD PowerDrive(Envelope) or Onkyo WRAT. The buzzword used by Marantz was "Automatic Voltage Shift Supply". It simply supplies more voltage to the output rails for brief high level passages or transients. That's pretty neat for 1988.
The unit is black and flawless, not a scratch or ding anywhere. The interior is dust free and all connections have been treated with CAIG products. The unit has been checked out by my tech and all is well. I have added roughly 1 lb. of Dynamat Extreme to the inside of the unit. All areas that were easily measured were covered in Dynamat. You will be VERY happy.
Anyways, here's some specifications:
100X2@8(Benchtested - 132x2@8 and 196x2@4) It's 4ohm stable.
6 Inputs (Inc. Tape Loop & Gold Plated Inputs on Phone/CD Stage)
Phono Stage (MM/MC)
AVSS (Automatic Voltage Shift Supply)
QuarterA (Class A Design)
Individual Tone Controls for L&R Channels (Bass & Treble)
Tone Control Bypass
A+B Speaker Outputs
CD Direct Mode
Loudness Contour
2 Switched/ 1 Unswitched Convenience Outlets
Weight = 28 lbs.
Includes: Hi-res copy of Stereo Review - Test Report circa 1988.
This unit was paired with a NAIM CDP running Magnepan 10.1 loudspeakers into dreamland without a complaint. If you have any questions or comments, contact me directly: dorokusai@verizon.net
Thanks for reading :D
571D47MPM E