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MC2301 amplifiers - Tube rolling 12AT7's
My friend Bob (vintage tube) made me an offer I could not refuse. From his personal tube locker stash of old stock tubes he has loaned me four each of the following 12AT7 tubes to audition in my MC2301 amplifiers, Siemens ECC801S, Telefunken ECC801S, and GEC A2900 (original Genalex 12AT7 made in Great Britain). All have been tested and matched, and are as new. This is a real thrill for me, especially since I would not likely purchase this many 12AT7's just to play with.
My MC2301's are using Gold Lion KT88 power tubes and Gold Lion 12AT7 voltage driver tubes, so I am comparing the Gold Lion 12AT7's against old stock Siemens, Telefunken and GEC. I am in the early stages of my audition, having about five hours of listening in comparing the Gold Lions to each of the other manufacturers tubes, and there are some surprises. I have been taking notes, playing the same five songs over and over, swapping 12AT7's and listening intently. I am not finished with my critical listening, so I am not yet prepared to reveal any discoveries, but suffice it to say I am having a grand ol' time enjoying this opportunity to roll some fresh bottles through the 2301's. More to come. See post #20 for full review.
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Dan STUDIO - McIntosh C1000C/P, MC2301 (2), MR88, Aurender N10, Esoteric K-01X, Shunyata Sigma spdif digital cable, Sonos Connect, PurePower 2000, Stillpoints, Furutech Flux 50, Michell Gyro SE, Michell HR Power Supply, SME 309, Ortofon Cadenza Black, Wireworld, Sonus faber Amati Anniversario LIVING ROOM - McIntosh C2300, MC75 (2), MR85, Magnum Dynalab 205, Simaudio MOON Neo 260D-T, Schiit Audio Yggdrasil, Aurender N100H, Shunyata Sigma USB cable, Micro Seiki DD40, Ortofon Cadenza Blue, Nakamichi BX-300, Sony 60ES DAT, PS Audio P10, Furutech Flux 50, Sonos Connect, Stillpoints, Wireworld, Kimber, PMC EB1i, JL Audio f113 VINTAGE - McIntosh MA230, Tandberg 3011A tuner, Olive 04HD, Sony DTC-59ES DAT, McIntosh 4300V, JBL 4312A Last edited by jdandy; 08-22-2017 at 06:12 PM. |
#2
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Dan,
That's quite an endeavor, a labor of love. Have fun and keep us posted. |
#3
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Let the good times roll.
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#4
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#5
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I know this is a dumb question but I will ask anyway..... How many tubes are there in a 2301 and how long does it take to change the out? This will be a great review for tube lovers. Thanks Dan for making AA a fun and interesting place.....
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Audio Room: Sonus Faber Amati Faturas / JL Audio 13.5” Fanthom In Wall Subs / McIntosh C52 / McIntosh MCD 1100 / McIntosh MEN 220 / McIntosh MC 601’s / McIntosh MPC 1500 / McIntosh MT 5 / McIntosh MC 275’s / Luxman AS-55 Amp Selector / Silenzo (This thing is Amazing) / Gold Lion Tubes from Vintage Tube All items in green were bought thru the AA marketplace and blue from a current AA retailer |
#6
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Quote:
To remove the 10 tubes and reinsert 10 -- less than 5 minutes from start to finish. Bob
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Amps:VAC 450iQ Monos in Silver Flake on HRS M3X2-1921's, HRS G7 Footers/G-Links & Sound Anchor Conecoasters. Preamp:VAC Statement (on order) (Silver Flake) Digital Source: dCS Rossini CD/SACD Transport, Vivaldi APEX DAC, Upsampler Plus & matching Clock (Silver) Analogue Preamp:VAC Renaissance SE Phono stage in Silver Flake with XLR Output Option & with Nordost Valhalla XLR's. Analogue Sources:SME 20/2 w/SME V arm & Nordost Odin 2 Tone Arm Cable, Palo Santos Presentation Cartridge & Akai GX-400D Reel-to-Reel w/relapped heads by JRF Magnetic Sciences. Akai RC-17 cabled remote (original owner since 1974). Vibration Control:TT on HRS M3X2-1921 shelf. Speakers:Wilson Audio Alexia V (on order in Ferrari Argento Silver/Parchment grills sitting on Acoustic Diode Kit). Power Cables:4 Nordost Odin Supreme Reference on amps, preamp & DAC. Ansuz Acoustics C2 on Transport & Clock. Power Distribution:Ansuz Mainz D3 Distributor & Ansuz Mainz C2 1M Power Cable Power Outlets:Furutech GTX-D NCF (R) duplex outlet, GTX Wall Plate & Duplex Cover (x2) on dedicated, same panel phase, 20A breakers. Speaker Cables:2M Nordost Odin 2 Supreme Reference on Nordost Sort Lifts. (on Order) Signal Cables:Nordost Odin XLR's on dCS DAC & Amps. Digital Cables: Nordost Odin 2's, 110-ohm AES/EBU on dCS Transport to DAC. Clock Cables:5 each 75 ohm 1.25M Nordost Valhalla BNC/BNC Digital Ethernet Cable: WireWorld Platinum 1M Starlight® 8 Twinax Headphones:Vintage Koss Pro IV AA. RCM: Audio Desk PRO Tube Test Gear:Mint late '60's/calibrated Heathkit TT-1A, MaxiMatcher Power Amp & Preamp & Space Tech Labs ATT-3.02 tube test sets. |
#7
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Quote:
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Audio Room: Sonus Faber Amati Faturas / JL Audio 13.5” Fanthom In Wall Subs / McIntosh C52 / McIntosh MCD 1100 / McIntosh MEN 220 / McIntosh MC 601’s / McIntosh MPC 1500 / McIntosh MT 5 / McIntosh MC 275’s / Luxman AS-55 Amp Selector / Silenzo (This thing is Amazing) / Gold Lion Tubes from Vintage Tube All items in green were bought thru the AA marketplace and blue from a current AA retailer |
#8
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Interesting to read what you find out. Enjoy the ride Dan.
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#9
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Hi Dan, I'm really looking forward to your results. FYI I use NOS Mullards in mine.
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#10
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Quote:
I just love the MC2301s with the grills off. My grills are in storage now, permanently! Last edited by MyPal; 08-04-2012 at 03:05 AM. |
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