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Upgrade Old Sony To Marantz Pm8004?

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Hello! Looking for some assistance to choose an upgrade from my Sony STR-GX40ES integrated receiver I have had it since the late 80's or early 90's (can't even remember the year). I recently added a Marantz CD Player (CD6004) and really like it. My system also has an Apple TV and MacMini as sources connected via a Rega DAC and Tannoy Mercury V4 speakers http://www.whathifi....view/mercury-v4.

So adding the CD Player has got me thinking about the old Sony Receiver. After reading a lot and trying to not go too crazy on budget I thought the Marantz PM8004 might be a good choice. A local dealer is recommending a NAD C356BEE but somehow I am leaning towards the Marantz.

But my question is really -- do you think that there will be a noticeable sound improvement? Maybe the speakers are more the limiting factor. How much improvement can I expect after a couple of decades of amplifier design improvements? A lot of the time I am quite happy with the sound (vocals, jazz, classical guitar) and I am less happy with rock or classical music. Should I bother with the amp or just look at speakers?

Sony STR-GX40ES specifications:

  • Power output: 75 watts per channel into 8Ω (stereo)
  • Frequency response: 5Hz to 50kHz
  • Total harmonic distortion: 0.08%
  • Input sensitivity: 2.5mV (MM), 150mV (line)
  • Signal to noise ratio: 87dB (MM), 105dB (line)
  • Output: 150mV (line)
  • Speaker load impedance: 4Ω to 16Ω

Marantz PM8004:

  • Output Power: 70W (8 ohms), 100W (4 ohms)
  • Frequency response: 5Hz – 100kHz ±3dB (CD, 1W, 8 ohms load)
  • THD: 0.02% (20Hz – 20kHz, 2 channel driven, 8 ohms load)
  • Input Sensitivity/Impedance: PHONO:MM:2mV/47k ohms, LINE:200mV/20k ohms, Power Amp Direct In:1.6V/15k ohms
  • Frequency response: 5Hz – 100kHz ±3dB (CD, 1W, 8 ohms load)
  • S/N Ratio PHONO:MM:87dB, LINE:106dB, POWER AND DIRECT IN:125dB

Any help is appreciated!

Best Regards

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Gooday Jimk. and welcome to the forum.

Why upgrade ' Your systym would sound terrific the way it is ..............anyway.........

Upgrade the speakers if anything .

Upgrading the amp would be unnoticeable.

Dampen the room down with drapes and heavy rugs , that will be noticeable for eccos are distortion............Alan

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