ossocao

Responses from ossocao

Audio Research Ref: CD8
Gave up on CD7, after 2 units and a lot of power supply problems upgrades. My last unit showed the SE Hum again even with the 5881 tube.I went to a CD8, 3 hours only, in it for now. I will post about it later. 
Audio Research Ref: CD8
I know you think that the CD7 had an upgrade in power supply. In fact it was a revision due to problem with the two regulator tubes.The problem can be noticed when you use the unit via SE outputs if you increase the volume you can here a huge hum.... 
Audio Research Ref: CD8
Dave, you make no sence: Ref2-MkII is 6H30+jfet based, by far the most SS like tube gear ARC ever made, also VT100MKIII and VT200MKII are 6H30+Jfet based.I had the REF2MKII and it took 500 to burn and a lot of setup to play well, after sometime pl... 
Audio Research Ref: CD8
Well mine CD7 finally is done too. Conclusion: I was listen to crap for the last 2 years. But different from most you guys I knew. My original CD7 was magical before the problem with the PS, after fixed (previuos upgrade) became just lifeless. Now... 
Audio Research Ref: CD8
Mbudinich, my player has the same kit of yours. Did notice something too: I have days that the player sound great in other lifeless. Does the same happened with you? 
Audio Research Ref: CD8
I found the minet CD7 sometimes lifeless and sound diffrent each time I turn it on, only after 3-4 hour of use the sound goes better. The sound is very far far away from the one when he came out from from box prior to the upgrade. Let's see if I w... 
Audio Research Ref: CD8
I think 6550 is more powerful than a 5881 (that is a smaller version of the 6L6), This tubes are being used in the PS so they are not in the path of sound, but as a part in the PS. As long as there is enough power for the audio circuits I don't th... 
Audio Research Ref: CD8
CD8 is a CD7 with different chip and a fixed Power Supply. As ARC does not use the opition of upsampling this chipsets offer all you hear is a Brand difference when convertion occurs. I don't belive in great superiory. 
Audio Research Ref: CD8
I suggest everybody to do the mod. All cd7 will show the problem if one of the two 6h30 drift from each other. The use of only one tube avoid that. On the sonic side can´t say nothing, I did not bring mine for the last upgrade yet. 
Audio Research Ref: CD8
What I´m saying is not about last update, I did not installed the 5881 update yet.I´m saying that mine CD7 have the last update before this one and the player sound better when it was new (before having the 6H30 problem).I can´t say nothing about ... 
Audio Research Ref: CD8
Well guys I see most of you dont know the full history of these. ARC is trying to correct the PS problem in the CD7 for the last two years. What you are seeing is not an upgrade, but a fix.Mine original CD7 was sttuning, live music, belive me. Aft... 
Audio Research Ref: CD8
For those who made the CD7 upgrade. Mine was already upgraded with a board on top of the two 6H30s slots. I had to change 4 resistors on the board, add one, put the board and installed two new 6h30.I heard the 5881 upgrade the tube is puted horizo... 
Review: Krell EVO 402/Evo202 Amplifier
Did you tried it in loud volume? The amp enter in A/B operation and the magic goes away. I think krell shoul get back to pure class A.