The Golden era of Japanese integrated amps, are we missing out?

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I would opine it was either the ta-4650 or ta-5650?

Great thread you all have you all  have  going on here. I am the original owner of a Nikko NA-890 integrated amp and it has  provided decades of solid musical enjoyment. The specs on it are pretty darn  good on her as well.
Specifications

Power output: 70 watts per channel into 8Ω (stereo)

Frequency response: 20Hz to 20kHz

Total harmonic distortion: 0.04% Lower than most  modern SS amps.

Damping factor: 60

Input sensitivity: 2.3mV (MM), 150mV (line)

Signal to noise ratio: 85dB (MM), 100dB (line)

Output: 150mV (line)

Speaker load impedance: 4Ω to 16Ω

Dimensions: 420 x 138 x 335mm

Weight: 11kg

I have it as part of my stereo set up in my large kitchen. It drives a  pair of Ohm L2s, with  brand new Ohm upgraded 8" woofers. My player  is a Yamaha CD S-2100, read my review on the  digital page, and I have a Black Jack Foz SS-X between them. I rarely ever turn it up to half the  volume as it gets  plenty loud.

I had it cleaned, as I  brought it out of storage about eight months ago, but did not consider to get it refurbished. @baranyi  thanks for the the recommendation about Puckerbrush Audio. I will email him and ask about his thoughts working on this unit.

I was think of  upgrading to a  brand  new  unit but if the refurbish work will give me the same, or better results I will stick with the Nikko. One great option not mentioned  yet was the loudness switch that these vintage units always had on them. For low volume listening it was also a must.

Now with the Foz SS-X I am no longer using the loudness switch, as it creates way to much bass when it it is on....did I just type that?!?

I have heard that many of these  vintage units are  heading  back to Japan and  China so if you come across something in great shape, for a great prices you should snatch it up. It was also very common that many of the major brands had many of the  same transformers, resistors, capacitors, etc. in their units so the base line  for quality was high, even for an entry level unit.

I love these  blog  posts by John Strohbeen, the owner of Ohm Speakers.

Here is a highly enjoyable one on the almost extinct loudness switch.
https://ohmspeaker.com/news/how-to-make-your-speakers-sound-great-at-high-and-low-levels/  


This one  mentions my favorite vintage speakers the Ohm H's, which are the mains in my HT rig.
https://ohmspeaker.com/news/best-bookshelf-speakers-of-the-golden-age-the-ohm-h/

He  has plenty of other great blog posts as well, so check them out. My  buddy, he owns a pair of Walsh 2's, and I are  hoping to  go  visit their listening room down in Brooklyn before summer's end.

Happy trials.

I recently purchased a Proton D540....Taiwanese I believe.  It sounds amazing.  From the late 80's.  6db of headroom.  Just brought my Dahlquist DQ10's to life.  https://therobbcollections.blogspot.com/2018/07/proton-audio-nad-and-dynaco-are-cousins.html

@sejodiren : I too bought a Proton (maybe the same model) cheap - $50! Very impressive and versatile - especially with the pre/power in/out jacks! And I almost passed it up!