Yup although I really wish I hadn’t ‘inner life of valves’ what a load of codswallop.At some stage, all audiophiles/HiFi nuts decide they want 'to give tubes a go', just for fun. My time with tubes was short lived in the early-mid 2000s. No desire to return to them, even though I've had some nice tube gear across my lab bench.
Tube amps for instruments like electric guitars are used because they create distortion and add tonal color. Not because they are transparent. For that use they are excellent. And they don’t need that much power. Though solid state emulation is now mostly indistinguishable…though sometimes more complicated/expensive than a cheap tube amp.Sure. Lots of reasons.
For start, musicians still use tube amps and preamps and it helps them create art. Some swear by tubes, even though D class amps with DSP might do the same, but if they knew, their art might suffer, so best left alone.
The other reason is antics and style. Who enjoys that kind of thing, why not... If I had the time and money, I would make a secondary system consisting of tube amps, analog tuner from 60s or 70s and a turntable... whatever..
I am sure there are others....
that is too much to ask of Amir. And is he supposed to measure the new tubes in isolation as well to ensure they are good and matched samples. There can be a relatively wide margin of error in tubes, vintage or newly made.totally agree..unless this has a batch of fresh tubes... then its an invalid test.
I be don’tAnd such a Dynaco ST-70 I can definitely see someone who knows electronics tinkering with.
Something that Amir also noted when he tested it:
I love the simplicity of tube amps like this. There is just so little to them. If I were less busy, I wouldn't mind playing with one to get it to optimal performance.
This is a review and detailed measurements of the vintage Dynakit Dynaco Stereo 70. It is on kind loan from a member who bought it used online and repaired it. Previous owner hand upgraded it but could not get it working. Given that it is 60 years old, one can forgive the rust and dust...audiosciencereview.com
With SINAD around 60 dB for a Dynaco ST-70 vs a solid state with SINAD around 90 dB, how can you hear the difference with a pair of speakers that have, for example, 40 dB distortion? The amp's distortion is then drowned out, or masked by the speakers' distortion, right? Maybe if we are more sensitive to higher order amp distortion than speaker distortion and can thus hear a difference between the amplifier and speaker mentioned in my example?
Given that both amplifiers have straight FR (or small but inaudible FR deviations), so you can discount that factor, that is.
sounds sort of like the faulty reasoning of an abuse victim….Stereophile:
"When I measure amplifiers like PrimaLuna's DiaLogue Seven, my eyebrows always rise because the things they do wrong must be balanced against the possible sonic befits of the other things they do."
"The DiaLogue Seven's measured performance in triode mode was notably worse than in ultralinear mode, yet Art Dudley ultimately preferred triode mode"
I've wondered for awhile if the 'warm' sound some claim from tubes is caused by PSU noise and ground hum. Many of the tube products tested here have a problem with 60 Hz spikes and other noise at low frequencies. Hum and noise tend to be intended in a lot of these 'audiophile' electronics.Interesting to see that myth about Tube amps improving performance after half an hour or more seems to be true.
Thanks for the review.
BTW, I had Audio Research VS55 tube amp for a while and I really liked the sound of the mids and highs. Silky and smooth. Or so I thought I heard it like that. But I remember that bass was awful. Muddy and flabby... I hated the bass response. It's surprising to hear that same impression from Amir about the bass... Wonder if it can be confirmed with blind testing.
Also, if this poor bass response is true, can it be measured somehow?