4efe3d82 6de9 4232 a80a 305b844d2697

glassandlight

Responses from glassandlight

Thinking about getting a R2R DAC
Audio GD makes an excellent one.  I will use the word "excellent" as a conservative description. You rarely see any of their equipment for sale second hand, but every other brand you do.  There is a reason.If you have not purchased something by no... 
Electro-Harmonix 6H30pi Gold vs Sovtek 6H30pi eb
Both the Sovtek and Electro Harmonix are made in the same factory, same tube.  If anything might change the tone, it would perhaps be the gold plate to improve contact.  Source: Upscale Audio. They also match and offer cryo at a premium (as does C... 
PrimaLuna Dialogue Premium Preamplifier. DESTROYS SPEAKERS!!
I am sorry but this is all BS, Mr. Thorioki. Not one word of this can be true.No preamp can destroy a speaker, unless it is transistor junk and sending infrasonic (sub hertz) into a cheap transistor amp ( which would have blown the fuse).   No tub... 
VTL MB450 power tube choice
Thank you for the opinion.  I have come to the same conclusion, especially after reading Kevin Deal saying that make of the last 6550 tubes made were not as good as the earlier onesMy speakers are SoubdLab Dynastat, about as big as this room can h... 
Question about caps in vintage power monoblocks
Make and model make a difference too, and what part of the 1980s?  Remember, there were recessions then, two in fact, and many manufacturers cut corners to stay in business.  The brand of the cap is important....quality is quality, the bottom line... 
Tube Physics Question
If a BMW has a Ford Cobra 500 hp engine installed in it, will it drive better, faster, or what? Switching tube is more than matching the voltages.  Just because it fits in the socket doesn't mean it will work.A KT120 or KT150 has a lot more 'horse... 
Tube Tester Mutual Conductance Falling - What it Means?
Hi Peter,What Hickok tester?  One that only measures shorts or one that measures leakage and shorts such as the 539 type KS and RD.If you tubes fade that fast you should have done a "life test".  Yes, gas can affect a reading on a Hickok, but it w... 
Is it a OK to leave tube pre-amps powede up 24/7
According to the Department of Defense, a preamp tube meaning a small signal tube if played 24/7/365 will last about 22 years.  At 8 hours a day, over 60 years.It has been pointed out that temperature plays a roll here.  It is not the tube that is... 
SYLVANIA 6SN7 GTB tall bottle tubes and short bottle
This is the story of the so called "BAD BOY"On HiFi head there was a question put out on ’what was your favorite 6sn7’ tube. This was about 16 years ago.Some new guy shows up and says ’his Sylvania 3 hole tube is a Bad Boy’ on his earphones. He ha... 
VTL MB450 Schematic
If the engineer can't figure out what he is looking at, you have the wrong engineer.  The circuit is straight forward tube design, each tube is independent but has a common power suppy.  You likely have a screen resistor blown from a crap tube, th... 
Sound of SED Winged C KT88 vs. SED Winged C 6550's
NOS vs new manufacture tubes sound different mainly because the oxides that we used and method to manufacture were toxic, and thus are manufactured anywhere but the USA.  Also, many old oxide formulas were lost as the companies were sold for scrap... 
VTL B+ Fuses
they are on eBat for about $5.00 each.  Limitron are super fast acting fuses.  No doubt they are in the VTL to protect the B+ transformer windings.  Regular fuses have to melt to break, Limitron blow on over amperage instantly.  Limitron is the br... 
Reliability of Big Tube Amps - Your input please..
It is not a flawed design, it is a protection feature to stop current from entering the transformer and possibly damaging it.  Every tube amp of competent design has a 10 ohm resistor, or there about, on the cathode to ground return...in effect wh... 
Does anyone know someone who can modify Mesa Baron
I have had one since 1998. Mine was modified by Mesa to be a tri tube version with WIMA caps. The speakers are Soundlab Dynastat. Tubes are JJ E34L all matched to 1ma, drivers and splitters are Mazda silver plate or (sometimes) Mullard m8137.This ...