#1
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6550 vs. KT-120
I would love to hear opinions on the difference between the two output tubes when used in a Ref 110.
Mine was delivered with the KT-120, though all of the glowing reviews out there are of the unit when running the 6550 output tubes. Any feedback would be appreciated on the sonic differences when specifically used in a Ref 110. Sent from my iPad using A.Aficionado |
#2
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I changed 6550 to KT120 in REF 110.
The KT120 has a more refined top end, warmer mids and better bass. Gives the feeling that the amp has better control on the signal.
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karsajid@gmail.com Legacy Whisper XD, Coda 15.0, Ayon Skylla, EAR Acute 3, Aurender S10 |
#3
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I would agree the K120 tubes sounded much nicer in my Ref110.
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VPI Scoutmaster; JMW-9 Signature; Shelter 7000 Bryston BDA2 + BDP2; ARC PH5; ARC Ref 5; ARC Ref 150, Equi=Tech Son of Q Wilson Sophia 3; Transparent - cables XLO - cables; Aural Symphonics - cords; Shunyata - cords |
#4
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I agree that I could not find a single aspect in which the 6550s bettered the Kt 120s in the Ref 110. That being said, none of the differences were dramatic. I would put the improvement at 10%-12% across the board.
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Wilson Alexia V, ARC Ref 160M MkII,Ref 40,Ref Phono2SE, Shunyata Triton3, Typhon, Sigma PCs, ICs & SCs, Spectral SDR4000SV (w MIT IC), Belcanto PL1, Oppo 205, Marantz 2270 (tuner only):AudioDesk and VPI record cleaners, Furutech Demag & Destat; Stillpoint Apertures, TechDas AF 3S Premium with SAT CF9 and Kuzma 4pt 9" arms, Lyra Atlas Lambda SL, Dynavector XV1-t stereo and XV1-s mono carts, Miyajima mono, Shure V15VxMR, |
#5
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A little off topic, but can anyone recommend a good quality bias setting tool? The little plastic tool ARC provides is too skinny to provide controlled torque on the trim pot to adjust the bias. And for some reason (probably I have the wrong vocabularly) this doesn't seem to be an easy tool to obtain online. I bought one, with a ceramic tip, but it is too short and once the KT120s go in there will be less room. I hate the smell of my own skin burning upon touching a hot tube!
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