calieng

Responses from calieng

Vintage tube sound from a modern amp
Not to dump on anyones product in particular but please beware tube amplifiers which have the tube sockets soldered directly to a circuit board. It is not a reliable construction over the long term especially for those who enjoy tube rolling. Heat... 
Question About Capacitor Upgrade in Tube Amp
Based on the good results with the Willsenton R300 I went ahead and upgraded the Muzishare X7 KT88 amp. It required four 0.22uF coupling caps and one 0.47uF filter cap bypass film cap. I used the Mundorf SilverGold Oil 1000VDC again. Similar res... 
Why do Tube Amps sound more romantic v SS amps
Listening thru a tube amplifier is still partially solid state. What do you think your streamer, DAC and other components are made from? Even within the tube amplifier the signal passes thru capacitors and resistors. The difference is a tube ampl... 
Question About Capacitor Upgrade in Tube Amp
@jaytor - Thanks for the reply!  
Question About Capacitor Upgrade in Tube Amp
Does anyone know how the power supply bypass capacitor effects high end frequency response? For example the Willsenton R300 amp uses a .33uF and is a slightly rolled off sounding amplifier while Muzishare amps are using .47uF on the filter cap an... 
Question About Capacitor Upgrade in Tube Amp
Interesting. NOS Allen Bradley Carbon comp resistors are all the rage for tube guitar amps. For their warmth and organic tone. I wonder how they fair in hifi? They do tend to drift in value a fair bit. So maybe not so good in hifi setting.  
Question About Capacitor Upgrade in Tube Amp
Each type of capacitor has a specific frequency response and voltage related distortion. It should stand to reason that better constructed capacitors should have a better frequency response and less distortion. Whether you can hear the difference... 
Question About Capacitor Upgrade in Tube Amp
@jaytor And most important, these amps have LETHAL voltages inside. Capacitors can hold a lethal charge for a long time. So I should have been careful soldering that bypass cap on the 330uF 450V Nichicon filter cap from hot to ground terminal? ... 
Question About Capacitor Upgrade in Tube Amp
There was a very very slight smoothness added in the very upper treble after about 20 hours run in versus very sharp and defined treble notes when caps were first installed.  Just last night I installed NOS RCA rectifiers and preamp tubes. So it ... 
Question About Capacitor Upgrade in Tube Amp
i personally would not spend so much on caps upgrade unless i know what trannies that are fitted on the unit.   The amp comes out of the same factory a Cayin and PrimaLuna. I have seen it reported that there is some amount of sharing of parts. ... 
Question About Capacitor Upgrade in Tube Amp
Yes given the cost of the map I did not want to spend too much on the upgrade but honestly I do not think it could sound any better. Bass, middle, and treble are all clear and in balance with each other.  I am sure all the other caps recommended ... 
Question About Capacitor Upgrade in Tube Amp
I received the Mundorf Supremes last night and got them installed this morning. Initial impression: Upper frequencies which were rolled off are now fully there. Cymbal crashes and other higher frequency elements that were in the background or mis... 
Question About Capacitor Upgrade in Tube Amp
@tomic601  Interesting point on some caps being too big for the application. But in this case I think the Mundorf Supreme SGO are in a similar size range to those being used - just better quality. On the Muzishare X7 model I suspect the Muzisha... 
Question About Capacitor Upgrade in Tube Amp
@boomerbillone  Hey thanks for the reply. The 300B tubes are around 300-350v with max plate voltage of 400V. I see most of the caps being used in these type of amps at 600VDC and up. I ordered the 1000VDC Mundorfs just to be safe. The power in ... 
Question About Capacitor Upgrade in Tube Amp
@millercarbon  What I have found useful: https://www.humblehomemadehifi.com/Cap.html I just wanted to take a minute to thank you for the link. It was indeed very helpful.