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#1
04-28-2015, 05:58 PM
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MC275 VI Stock Tubes Opinions
I did some searching and didnt come up with much on this. Are the stock tubes really good or is a replacement in order pretty quickly? I replaced the stock tubes in my c2300 pretty quickly with tele tubes and it sounds great. I just wondered what the consensus is.
 thanks 
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#2
04-28-2015, 06:47 PM
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parkcitygolf... Welcome to AA!
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Ivan FLORIDA MX136, MC1.2KW(10) MC2KW(2), MCD1100, MS750(2) MVP881, C1000C/P/T, MPC1500, HT-2 SUBS(2) HT3F(2) WS350(2) XRT2K, XCS2K, XR27(2) XCS350(2) JL GOTHAM v2 SUBS(2) SILENZIO MUSIC SERVER, LUMAGEN RADIANCE SCALER, SONY VPH-G90U 4K PROJECTOR, STEWART 120" MOTORIZED SCREEN, CINEMA-TECH SEATING, WW PLATINUM CABLES Reference System: ACCUPHASE A300 AMPS, C3900 PRE-AMP, DP1000 CD/SACD TRANSPORT, DC1000 DIGITAL PROCESSOR, DG-68 DIGITAL EQUALIZER, T1200 FM STEREO TUNER, PS1230 POWER SUPPLY, HRS-SXR CUSTOM RACK w/ M3X SHELVES, TAD REFERENCE ONE MK2 LOUDSPEAKERS, WW PLATINUM CABLES CAPE COD MX150, MC501(2) MC1.2KW(10) MC2301(2) MR88, MVP881, MCD1100, MDA1000, C1000C/P/T, MPC1500, ESOTERIC K-01X 30th ANNIVERSARY (BLACK) SACD/CD PLAYER, G02-X CLOCK, HT3F(2) XRT2K, XCS2K, XR27(2) JL GOTHAM v2 SUBS(2) JL FATHOM F113v2 SUBS(4) SOUND ANCHOR STANDS(2) KALEIDESCAPE STRATO & TERRA SERVERS 80-TB, LUMAGEN RADIANCE SCALER, SONY VPH-G90U 4K PROJECTOR, STEWART 120" SCREEN, SONUS FABER STRADIVARI, SILENZIO MUSIC SERVER, FORTRESS SEATING, WW PLATINUM CABLES Analog Rig: CLEARAUDIO INNOVATION WOOD, UNIVERSAL ARM w/ Da VINCI' CART, 2nd UNIVERSAL ARM w/ GOLDFINGER STATEMENT CART, HRS-MXR REFERENCE RACK-GLOSS BLACK w/ M3X SHELVES, AESTHETIX RHEA SIG PHONO-PRE, BRYSTON BHA-1 HEADPHONE AMP, WW PLATINUM CABLES Reference System: BURMESTER 911MK3 AMP(3), 088 PRE-AMP, 089 CD PLAYER, 100 PHONO PRE-AMP, 948 POWER CONDITIONER, ACCUPHASE DG-68 VOICING EQUALIZER, AVID ACUTUS REFERENCE SP TT, GRAHAM PHANTOM II SUPREME ARM, BENZ MICRO LP-S CART, GRANDIOSO P1X/D1X STACK, G1X RUBIDIUM MASTER CLOCK, N05 NETWORK PLAYER, SILENZIO MUSIC SERVER, HRS-SXR CUSTOM RACK w/ M3X SHELVES, SONUS FABER AIDA SPEAKERS, JL FATHOM F113v2 SUBS(2) SOUND ANCHOR STANDS(2) WW PLATINUM CABLES Library System: GRANDIOSO M1 MONOBLOCK AMPS, C1 LINESTAGE PRE-AMP, K1X CD/SACD PLAYER, G1 MASTER RUBIDIUM CLOCK, E02 PHONO-PRE, SILENZIO MUSIC SERVER, AERIAL ACOUSTICS 20T V2, AERIAL SW12 SUBS(2), CANTON REF K1’s, VPI HRX TT w/ SDS POWER SUPPLY, ORTOFON CADENZA BLACK CART, KLAUDIO RCM, SHUNYATA DENALI 6000/S v2, SHUNYATA OMEGA QR’s, WW PLATINUM CABLES Esoteric/Bryston System: ESOTERIC C02-X PRE-AMP, P-02X TRANSPORT, D02-X DAC, G02-X CLOCK, BRYSTON 28B3 CUBED MONOBLOCK AMPS(4), BRYSTON BHA-1 HEADPHONE AMP, SHUNYATA DENALI 6000/S v2(2) EVEREST 8000 POWER CONDITIONER(2) ALTAIRA CG & SG HUBS, AMR-DP777-SE DAC, SILENZIO MUSIC SERVER, TAD REFERENCE ONE MK2 LOUDSPEAKERS, QUADRASPIRE RACK, WW PLATINUM CABLES Accuphase/Canton System: ACCUPHASE E800 INTEGRATED, DP570 CD/SACD PLAYER, T1200 FM STEREO TUNER, DG-68 VOICING EQUALIZER, PS530 POWER SUPPLY, CANTON REF K3’s, CANTON REF K5’s, SILENZIO MUSIC SERVER, HRS MXR REFERENCE MAHOGHANY RACK w/ M3X2 SHELVES, WW GOLD CABLES
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#3
04-28-2015, 06:56 PM
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Quote:
The current tubes supplied in McIntosh gear are Russian manufactured tubes. They are considerably better than the small tubes (12AX7 and 12AT7) that were made in China that McIntosh used for a few years. It is my understanding the small tubes used now are from JJ Tubes and the KT88's are Electro-Harmonix. Both of my C2300 preamp purchases and my C1000T preamp came with the Made In China 12AX7 tubes which I immediately changed to Telefunken and Gold Lion tubes. I think if they had came with the JJ tubes I might have stayed with them, at least for awhile. Better quality tubes never hurt a component's performance in my opinion.
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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; 04-28-2015 at 11:54 PM.
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#4
04-28-2015, 07:47 PM
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Dan: You may have covered this before but what is a good way to determine if someone has China made or Russian made tubes in their C2300?
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Two Channel: McIntosh C2300 preamp, MC601 amps x2, MR88 tuner, MEN220; Esoteric K-03X; Aurender N100C 4TB; B&W 802D2 Diamonds, JL Audio F113V2 x 2 on Sound Anchor Sub Stands; VPI Classic Signature Piano Black, Ortofon Cadenza Black, VPI SDS, periphery ring, StillPoints center weight, Gingko Audio ClaraVu Dust Cover CT, KAB SpeedStrobe, Dr. Feickert Analogue Protractor; Sonos with W4S digital modification to W4S Remedy to Esoteric; W4S PS1 Linear Power unit for the 2x Remedy and Recovery w/ W4S PS1 Power Cord; Torus RM20; Wireworld Silver Series 7 Electra/Starlight/Eclipse cables and WW Platinum Power Cord for Amps and Platinum USB for Aurender; KLAUDIO RCM; Steve Blinn Designs extra wide three shelf rack; GIK Acoustics panels and bass traps, StillPoints Ultra Minis under all gear and Stillpoint Ultra SS under amps and speakers. Home Theater 7.2: McIntosh MX150, MC452, MC207; B&W 803D2 Diamonds, HTM2 center, CWM7.3 surrounds; JLAudio F112 x2 subs; Panasonic TC-P65ZT60 65" Studio Master Plasma; Oppo 205; Crown FM Two Tuner; Sonos with W4S Remedy; Apple TV; Furman Elite 20 amp PFi x2; WW and AQ Cables/Cords; Salamander Synergy Four Bay Cabinet Office 2ch with McIntosh vintage refurbished gear: McIntosh MC275V6 x2 tube amps; Klipsch Cornwall I vintage speakers (1982); AQ Dragonfly Red DAC/Jitterbug/cables; PS Audio Dectet Power Center; Mcintosh C28, MC2105, MR78 (with mod), MQ101, each with original walnut cabinet and panloc (1976), MCD7008 (1996), ML1C speakers (1976); Bang & Olufsen Beogram 4002 turntable (1976) with new SoundSmith SMMC20CL cartridge (2015); Salamander double rack
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#5
04-28-2015, 10:55 PM
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Quote:
 . . . . . . 
__________________
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
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#6
04-29-2015, 04:24 AM
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I would agree to look at replacing the signal tubes first, you would be amazed at how big a difference it makes just replacing the 12AT7's with quality tubes, I prefer the Genalex A2900, But NOS RCA 6201 also sound good and are much more affordable.
Good Luck,
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ARC REF6, ARC Ref PH 2SE, ARC Ref 150SE, Esot N-05, SF Oylimpia III, Garrard 301 Reed2p, WW Silver Eclipse 8, Kimber Kable Select IC XLR C22, MC275, MR78, PS Audio Dac, Tannoy Daltons 12" Red's Tannoy ST200 Tweeters, Kimber IC's, Mac Mini, Transparent ULTRA Speaker. Marantz 7C, Marantz, 9, & 10B Tuner, Tannoy 15" Red's in York Corner Cabinets ARC Ref1, ARC VT 100II, MR74, Tannoy Red 12 LSU/12/8, Spider Transcription TT, Nordost Spk Cable Fisher 400C, MR78, Fisher SA 1000, BenchMark Dac, Auditorium 23 Speaker Cables, Tannoy Supper Red 10" LSU/III/Z Monitors ARC SP3, MC 30's, MR67, Devore Supper 8's, Wadia i171, MicroMega Dac, Transparent Supper Spk C20, MC75's, MR71, MS300, Tannoy 12" Golds, Auditorium 23, C11, (2)Harmon Kardon CitationII, Shindo Montille, MC2505, McIntosh 117, Audio Research ST70, Knight KB85, Pilot Sa 232, Marantz 8B Scott 130 Preamp, Scott 272 Int, HH Scott 250's MR71 tuner, Tube Guru F2a Mono's,
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#7
04-29-2015, 10:33 AM
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When I replaced the stock power tubes with Gold Lion kt88s, a layer of glare was instantly removed. When I replaced the small tubes with a combination of NOS Siemens and Telefunken tubes, a degree of focus and purity was imparted.
I say replace them all! The Gold Lions are relatively cheap. Also, jdandy has had great luck with Gold Lion 12ax7s in other Mac products, so that's an option you might explore.
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#8
04-29-2015, 10:51 AM
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Thanks for the warm welcome. Should I wait a bit before switching or should I just go with these and get the party started?
http://www.amazon.com/Genalex-Gold-L...ords=bnb+tubes What are the recommendations for the big tubes? Or should I stick with them for a bit as well?
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System#1 - C2300, MC275 VIx2, MCD301, D100, VPI Scout 1.1/Soundsmith, & Thiel 1.7's System#2 - ARC SP16, MC250, SDS-470 & Snell K7
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#9
04-29-2015, 01:24 PM
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parkcitygolf, I owned two MC275 v6 amps set up in mono about 6 months ago. I listened to the stock tubes only for a couple of hours and then replaced all of them with NOS upgraded tubes which I had. They were SED 6550's for power, and a combination of Mullard CV4024, Tesla E83CC and Dario Miniwatt 18ECC signal tubes. I have heard that Gold Lions are a great match also. I have them in my C2300. I noticed an immediate improvement in sound quality when I made the switch. I also preferred two MC275's in mono over one in stereo. My hearing may be biased since I also preferred the sound of the MC601 mono amps over the MC275s which I no longer have.
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Paul Harbeth 40.3 XD, Sound Anchor stands w/ Stillpoints, Luxman M900 & C900, Aurender N20, Jay's Audio CDT3 - MK3 CD player, Mola Mola Tambaqui DAC, Shunyata Everest, Altaira
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#10
04-29-2015, 01:40 PM
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