My shanling T100se player sounded like a normal hifi cd player. Not like a tube player. I modified the tube output stage and removed all the opamps in the tube path. I used a JJ ECC99 tube with sounds very open with deep bass and silky hightones. after the mod you do not reconnice your shanling player. The direkt output is still working. So i can compare it with the tube output.
I removed the headphone tube board. In its place a mounted two tubesockets for the ECC99. Wired it point to point.
Disconnect all power wires to the tube output board. Because you need all the current you can get for the ECC99 tubes.
Removed opamp 5,6,7,8 on the picture below. And connected the new tube inputs to pin 2 and 3 from opamp 5 and 7. See pictures below.
I am now trying the 6N6P tubes. If i like them i will make a symmetrical output only with tubes. This will look also nice because i will need to use 4 tubes.
Already the shanling CD T100se is the best sounding CD player i ever have modded.
Alfcat, every part in the signalpath has his influence on the audiosignal. In the shanling there are 4 opamps, 12 condensators and several resistors in the signalpath. Every part has influence on the signal like noise, distorsion, coloration, lower channelseparation and fase shifting. These parts are used because they are cheaper to use as tube parts and most people think that tubes are not from this time. So less parts is more enjoy. Most of the passive mods are sounding better but when measure the signal it is less good as before. Many manifactures like to have the best measurements because a lot of people buy they gear just reading the specifications and not by listening( about 95% of the people ).So our ear is the reference and not the measurements. Listening is everything.
It is possible to use just one part ( a resistor ) after the DAC for I/V conversion. But then the sound will be to analytic. That i do not like, i like the tubesound. And the DAC can easy got defect by a short of the output.
I like to wish you, your family and everybody else a merry christmas and a lot of modding in the new year.
But here at home it is not only cats but also 2 bernersenner dogs, 6 birds, 2 guine pigs, 3 aquaria with hundred fish and a pond with 30 koikarp.
It is like a zoo and every evening i must fight for the cauch with the dogs.
You saw some christmas lights. And the camera displays only a part of the pond. The carp are inactive because of the low temp ( 4 grd ). They al are in the deep part of the pond. Because of the timeshift it is also possible that you see just black and lights.