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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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[quote user="morricab"]Hi Romy, KR audio is making high power SET and parallel SET amps using tubes designed by them specifically for low frequency amplification (read as in not radio frequencies). They are getting the power with lower voltages...
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Dealing more with Sun Audio SV-2A3 kit it amassed me how bad the kit was. The guys made very cheap, in fact I hardly believe that this company has anything to do with Japan – it looks more like K-Mart level of amplifier. I heard a number of very posi...
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Hi Romy, I recently heard the smallest Cessaro and while I felt that the bass was not adequate for long term satisfaction it was also not a total disaster. From the midbass on up; however, the speaker is simply superb and one of the very best h...
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[quote user="Romy the Cat"]BTW, I have a local Bostonian guy have replied brought today a very interesting DHT amp. He has a number of DHTs and this one he reports is the special one, quite expensive as well. Although the electricity was not good tod...
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[quote user="Romy the Cat"]In meanwhile, if anyone has any proposal what tube to try in the Sun Audio audio kit’s output stage then let me know.[/quote]You want a suggestion for a good 2A3? Get Ricardo Kron's (KR Audio Enterprises) KR 2A3. Very rug...
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[quote user="morricab"]Hi Romy, KR audio is making high power SET and parallel SET amps using tubes designed by them specifically for low frequency amplification (read as in not radio frequencies). They are getting the power with lower voltages...
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[quote user="drdna"]You want a suggestion for a good 2A3? Get Ricardo Kron's (KR Audio Enterprises) KR 2A3. Very rugged, overbuilt. There is no comparison between this tube and all other 2A3's, and I tried many of them. The sound is more dynamic, the...
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Firstly, thank you to Montepilot, Paul S, KLegind, zanon and Romy for all your thoughts on the Zu Druids. I recently tried high-passing the Druids at various frequencies and using a pair of Wilson-Benesch Chimeras and various amps for LF and uppe...
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Hi Romy, KR audio is making high power SET and parallel SET amps using tubes designed by them specifically for low frequency amplification (read as in not radio frequencies). They are getting the power with lower voltages and higher currents th...
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What I find interesting though, Romy, is that many of the SET measurements show gross distortion even when putting out very low power, which suggests that they are saturated from the high static DC current running through them as they must for a Clas...
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I have noticed the same kind of control and "density" of sound from KR audio amps, which are zero feedback. Have you tried this brand of amp? The one thing that I can tell conclusively about the two different amps is that neither one suff...
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"Indeed for classical work I often find a slightly under damped bass response to be emotionally evocative and of benefit to the illusion of the acoustic"Have you looked at the primary cause of this issue with most SET amps? I can tell you that ...
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[quote user="morricab"] You are also right that to get everything you want from an output transformer requires a VERY expensive construction and top materials. However; even an expensive transformer is no guarantee of success. [/quote]
Sorry t...
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Merlin here is the Stereophile measurements on the Lamm ML2.1http://stereophile.com/tubepoweramps/1004lamm/index4.htmlAs you can see the rise in distortion vs. frequency shows only a small rise in distortion even down to 10Hz. This is an indica...
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Paul Hi, I don't consider myself a dealer, just an enthusiast, I just wanted to discover just what was possible with audio replay, Thomas Woschnicks system (whee i first heard the Alpha's ) was just more real more like real life than anything I had b...
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[quote user="morricab"] The one thing that the Lamm ML2 does differently than nearly all tube amps is regulation of the output stage. They do this with the 2nd 6C33C that is on the chassis. Even the KR amps don't do this and I think it is...
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[quote user="Romy the Cat"][quote user="drdna"]However, there is no comparison to the expensive tubes from Kron, Sophia, and Emission Labs. These are all in a separate category. These produce a very different sound. It is like this: on the old black ...
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[quote user="drdna"] I built this amplifier more than ten years ago, before these other tube companies were in business. I know the Vaic tubes, which the EL tubes are related to. However, I have not tried either tube. Maybe it is a good idea (and I c...
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[quote user="Wojtek"]I assembled SUN 2A3 amp for my friend and found it to be quality kit and very easy assemble. Kit was old .I think late 90's so maybe quality deteriorated since then. I have variety of 300b Czech tubes and (Eml 300b , KR 300...
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Having listened for a while with the tubes, I have come to some conclusions. The three tubes I have seriously listened to are: Kron, Sophia, and Emission Labs. All the tubes are much better than any other modern 2A3 tubes I have tried. I felt my in...
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[quote user="drdna"]KR Enterprises 2A3. Minimal mechanical resonance. Solidly built. Very good, even reproduction of music across the frequency range. There is minimal harmonic distortion. The HF, midrange, and LF are correct. The reproduction of the...
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