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Old 02-02-2012, 03:18 PM
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Default HiFi Tuning Fuses Installed

I have installed the HiFi Tuning Supreme fuses in my C1000C controller, MC2301 amps, and MC601 amps. I had to order another 500mA HiFi Tuning Supreme fuse for my C2300 because on my initial fuse order I neglected to notice the C1000C controller required two fuses, so I used the fuse I ordered for the C2300 as the second fuse in the C1000C.

The HiFi Tuning fuses have a symbol printed on the barrel with an arrow. I take this to be an indication of the direction the fuse should be installed in the 120 volt circuit. Initially, I installed the fuses with the arrow pointing into the amplifier. After several days of auditioning I decided to reverse the direction of the fuses, and surprisingly discovered the systems sound better with the fuse arrow pointing toward the rear of the amp. In other words, the fuse arrow is pointing toward the fuse holder cap. This discovery motivated me to pull my C1000C out of the rack, remove the cover and examine the fuse holder. As I suspected, the voltage path through the fuse holder is toward the rear of the amp. See my example below.


. . . . . . .


This particular fuse holder wiring scheme is the way McIntosh routes the incoming 120 volts AC. I cannot state with conviction that this is how other manufacturers may wire their fuse holders, so you should look for yourself if you plan to install HiFi Tuning fuses in amplifiers or preamplifiers other than McIntosh.

With respect to the sound of my gear after the HiFi Tuning Supreme fuses were installed in the correct direction, I am sensing a minor improvement in the micro details, plus a small improvement in the space between voices and instruments. This improvement is not dramatic, in my opinion, more just a slight increase in clarity of the presentation. This did not jell until I reversed the fuse positions from my initial install, and though I don't understand why the direction of a fuse impacts the sound, I sense the system sounds better with the present fuse arrangement. At $53.95 per fuse for the HiFi Tuning Supreme fuse in small Slo-Blo size, the four I installed in the studio system ran $215.80. As audio tweaks go, this is not an outrageous price, even considering the audible improvements aren't monumental, at least to my ears. I had the same sensation of a slight performance enhancement with the MC601's in the living room system, and feel that once my last HiFi Tuning Supreme fuse is installed in my C2300 the overall performance bump is worth the price of admission.
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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; 06-01-2018 at 12:50 PM.
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  #2  
Old 02-02-2012, 03:35 PM
dpod4
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Quote:
Originally Posted by jdandy
i have installed the hifi tuning supreme fuses in my c1000c controller, mc2301 amps, and mc601 amps. I had to order another 500ma hifi tuning supreme fuse for my c2300 because on my initial fuse order i neglected to notice the c1000c controller required two fuses, so i used the fuse i ordered for the c2300 as the second fuse in the c1000c.

The hifi tuning fuses have a symbol printed on the barrel with an arrow. I take this to be an indication of the direction the fuse should be installed in the 120 volt circuit. Initially, i install the fuses with the arrow pointing into the amplifier. After several days of auditioning i decided to reverse the direction of the fuses, and surprisingly i discovered the systems sounded better with the fuse arrow pointing toward the rear of the amp. In other words, the fuse arrow was pointing toward the fuse holder cap. This discovery motivated me to pull my c1000c out of the rack, remove the cover and examine the fuse holder. As i suspected, the voltage path through the fuse holder is toward the rear of the amp. See my example below.

. . .

This particular fuse holder wiring scheme is the way mcintosh routes the incoming 120 volts ac. I cannot state with conviction that this is how other manufacturers may wire their fuse holders, so you should look for yourself if you plan to install hifi tuning fuses in amplifiers or preamplifiers other than mcintosh.

With respect to the sound of my gear after the hifi tuning supreme fuses were installed in the correct direction, i am sensing an minor improvement in the micro details, plus a small improvement in the space between voices and instruments. This improvement is not dramatic, in my opinion, more just a slight increase in clarity of the presentation. This did not jell until i reversed the fuse positions from my initial install, and though i don't understand why the direction of a fuse impacts the sound, i sense the system sounds better with the present fuse arrangement. At $53.95 per fuse for the hifi tuning supreme fuse in small slo-blo size, the four i installed in the studio system ran $215.80. As audio tweaks go, this is not an outrageous price, even considering the audible improvements aren't monumental, at least to my ears. I had the same sensation of a slight performance enhancement with the mc601's in the living room system, and feel that once my last hifi tuning supreme fuse is installed in my c2300 the overall performance bump is worth the price of admission.
Thx for the useful update. I need to go do the same with mine.
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Old 02-02-2012, 03:40 PM
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Great review Dan as always ! Thank you so much.
I'm happy that you like them. Kudos to Alexander (n4n).

My limited experience at this time is that inserting the fuses with the arrow pointing to the cap gives a slightly more relaxed and musical sound, but it seems to me that I lost dynamics and involvement....
Not sure though. Sometimes, when the sound improves, it sounds calmer and more relaxed so I may mistake this by a loss of dynamics, or I may be under the intoxication of the WP8....
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Old 02-02-2012, 03:43 PM
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Dan : no doubt, it sounds clearly better with the fuse arrow pointing to the cap.
Thanks a lot !
What a strange hobby we have though....
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Old 02-02-2012, 03:55 PM
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Quote:
Originally Posted by C220MC275 View Post
Dan : no doubt, it sounds clearly better with the fuse arrow pointing to the cap.
Thanks a lot !
What a strange hobby we have though....
Jérôme......Indeed, there are some true mysteries in our hobby. I don't understand the logic of fuse direction impacting audio, but then I don't understand how two parts hydrogen and one part oxygen creates water, either.
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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; 03-28-2012 at 11:13 AM.
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Old 02-02-2012, 04:19 PM
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Quote:
Originally Posted by jdandy View Post
Jérôme......Indeed, there are some true mysteries in our hobby. I don't understand the logic of fuse direction impacting audio, but then I don't understand how one part hydrogen and two parts oxygen creates water, either.
So true Dan.
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  #7  
Old 02-02-2012, 09:24 PM
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Jérôme.......I know you have your HiFi Tuning fuses installed in your MC2301'a. Did you get your fuses installed in the C1000C controller yet?
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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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  #8  
Old 02-02-2012, 09:26 PM
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Dan... I'm looking forward to getting mine installed in the Cape in a few weeks.
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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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Old 02-02-2012, 09:30 PM
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Quote:
Originally Posted by Masterlu View Post
Dan... I'm looking forward to getting mine installed in the Cape in a few weeks.
Ivan.......It's nice that you can just walk into the catwalk room and have access to the back of all the gear. Doesn't get much easier than that. Spin one of your favorite CD's or SACD's before swapping the fuses, then play the same disc again immediately after the swap. I'll be interested in your impression.
__________________
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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  #10  
Old 02-02-2012, 09:41 PM
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Masterlu Masterlu is online now
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Quote:
Originally Posted by jdandy View Post
Ivan.......It's nice that you can just walk into the catwalk room and have access to the back of all the gear. Doesn't get much easier than that. Spin one of your favorite CD's or SACD's before swapping the fuses, then play the same disc again immediately after the swap. I'll be interested in your impression.
I'll call it, as I hear it.
__________________
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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