Site Owner/Administrator
Location: Wrexham, North Wales, UK
Posts: 110,012
I'm AudioAl'sArbiterForPISHANTO.
Regarding the 'Mullard 10M Master Series 12AX7', I've just received this feedback from my regular NOS valve supplier in the States:
Well, that's that one crossed off the list!Actually Mullard 10M tubes are totally overrated. Basically these were regular ECC83 tubes that were made for longer life and tested at the factory. You may get similar results to these from late 1950s Regular Mullards...
Marco.
Main System
Turntable: Heavily-modified Technics SL-1210MK5G [Mike New bearing/ETP platter/Paul Hynes SR7 PSU & reg mods]. Funk Firm APM Achromat/Nagaoka GL-601 Crystal Record Weight/Isonoe feet & boots/Ortofon RS-212D/Denon DL-103GL in Denon PCL-300 headshell with Funk Firm Houdini/Kondo SL-115 pure-silver cartridge leads.
Paul Hynes MC head amp/SR5 PSU. Also modded Lentek head amp/Denon AU-310 SUT.
Other Cartridges: Nippon Columbia (NOS 1987) Denon DL-103. USA-made Shure SC35C with NOS stylus. Goldring G820 with NOS stylus. Shure M55E with NOS stylus.
CD Player: Audiocom-modified Sony X-777ES/DAS-R1 DAC.
Tape Deck: Tandberg TCD 310, fully restored and recalibrated as new, by RDE, plus upgraded with heads from the TCD-420a. Also with matching TM4 Norway microphones.
Preamps: Heavily-modified Croft Charisma-X. LDR Stereo Coffee. Power Amps: Tube Distinctions Copper Amp fitted with Tungsol KT-150s. Quad 306.
Cables & Sundries: Mark Grant HDX1 interconnects and digital coaxial cable, plus Mark Grant 6mm UP-LCOFC Van Damme speaker cable. MCRU 'Ultimate' mains leads. Lehmann clone headphone amp with vintage Koss PRO-4AAA headphones.
Tube Distinctions digital noise filter. VPI HW16.5 record cleaning machine.
Speakers: Tannoy 15MGs in Lockwood cabinets with modified crossovers. 1967 Celestion Ditton 15.
Protect your HUMAN RIGHTS and REFUSE ANY *MANDATORY* VACCINE FOR COVID-19!
Also **SAY NO** to unjust 'vaccine passports' or certificates, which are totally incompatible with a FREE society!!!
Trade Member (Manufacturer)
Location: Wales
Posts: 37
Hard to tell from a pic, that looks like a long plate?Originally Posted by Prince of Darkness
If I could find my stash I'd let you know, they are all pulls from vintage equipment.
Edit:
Doah, heading says it's a long plate
Note to self: "Read description before putting boot in mouth !!"
Last edited by Slatedeck; 14-10-2008 at 16:23.
Site Owner/Administrator
Location: Wrexham, North Wales, UK
Posts: 110,012
I'm AudioAl'sArbiterForPISHANTO.
Views on Mullard M8137s, Darren?
Marco.
Main System
Turntable: Heavily-modified Technics SL-1210MK5G [Mike New bearing/ETP platter/Paul Hynes SR7 PSU & reg mods]. Funk Firm APM Achromat/Nagaoka GL-601 Crystal Record Weight/Isonoe feet & boots/Ortofon RS-212D/Denon DL-103GL in Denon PCL-300 headshell with Funk Firm Houdini/Kondo SL-115 pure-silver cartridge leads.
Paul Hynes MC head amp/SR5 PSU. Also modded Lentek head amp/Denon AU-310 SUT.
Other Cartridges: Nippon Columbia (NOS 1987) Denon DL-103. USA-made Shure SC35C with NOS stylus. Goldring G820 with NOS stylus. Shure M55E with NOS stylus.
CD Player: Audiocom-modified Sony X-777ES/DAS-R1 DAC.
Tape Deck: Tandberg TCD 310, fully restored and recalibrated as new, by RDE, plus upgraded with heads from the TCD-420a. Also with matching TM4 Norway microphones.
Preamps: Heavily-modified Croft Charisma-X. LDR Stereo Coffee. Power Amps: Tube Distinctions Copper Amp fitted with Tungsol KT-150s. Quad 306.
Cables & Sundries: Mark Grant HDX1 interconnects and digital coaxial cable, plus Mark Grant 6mm UP-LCOFC Van Damme speaker cable. MCRU 'Ultimate' mains leads. Lehmann clone headphone amp with vintage Koss PRO-4AAA headphones.
Tube Distinctions digital noise filter. VPI HW16.5 record cleaning machine.
Speakers: Tannoy 15MGs in Lockwood cabinets with modified crossovers. 1967 Celestion Ditton 15.
Protect your HUMAN RIGHTS and REFUSE ANY *MANDATORY* VACCINE FOR COVID-19!
Also **SAY NO** to unjust 'vaccine passports' or certificates, which are totally incompatible with a FREE society!!!
Trade Member (Manufacturer)
Location: Wales
Posts: 37
Never had one to try Marco,Views on Mullard M8137s, Darren?
Marco.
Currently in my pre are two Blue printed Mazda's and two Mullards,
Perhaps if we meet up I can lend you a few to try?
Last edited by Slatedeck; 14-10-2008 at 16:37.
Site Owner/Administrator
Location: Wrexham, North Wales, UK
Posts: 110,012
I'm AudioAl'sArbiterForPISHANTO.
Sounds good to me
Marco.
Main System
Turntable: Heavily-modified Technics SL-1210MK5G [Mike New bearing/ETP platter/Paul Hynes SR7 PSU & reg mods]. Funk Firm APM Achromat/Nagaoka GL-601 Crystal Record Weight/Isonoe feet & boots/Ortofon RS-212D/Denon DL-103GL in Denon PCL-300 headshell with Funk Firm Houdini/Kondo SL-115 pure-silver cartridge leads.
Paul Hynes MC head amp/SR5 PSU. Also modded Lentek head amp/Denon AU-310 SUT.
Other Cartridges: Nippon Columbia (NOS 1987) Denon DL-103. USA-made Shure SC35C with NOS stylus. Goldring G820 with NOS stylus. Shure M55E with NOS stylus.
CD Player: Audiocom-modified Sony X-777ES/DAS-R1 DAC.
Tape Deck: Tandberg TCD 310, fully restored and recalibrated as new, by RDE, plus upgraded with heads from the TCD-420a. Also with matching TM4 Norway microphones.
Preamps: Heavily-modified Croft Charisma-X. LDR Stereo Coffee. Power Amps: Tube Distinctions Copper Amp fitted with Tungsol KT-150s. Quad 306.
Cables & Sundries: Mark Grant HDX1 interconnects and digital coaxial cable, plus Mark Grant 6mm UP-LCOFC Van Damme speaker cable. MCRU 'Ultimate' mains leads. Lehmann clone headphone amp with vintage Koss PRO-4AAA headphones.
Tube Distinctions digital noise filter. VPI HW16.5 record cleaning machine.
Speakers: Tannoy 15MGs in Lockwood cabinets with modified crossovers. 1967 Celestion Ditton 15.
Protect your HUMAN RIGHTS and REFUSE ANY *MANDATORY* VACCINE FOR COVID-19!
Also **SAY NO** to unjust 'vaccine passports' or certificates, which are totally incompatible with a FREE society!!!
Trade Member (Manufacturer)
Location: Wales
Posts: 37
All this talk of valves,
I moved here just over a year ago and still my main amp still in pieces here and there. Bout time it sang again.
The PX4's are ok but, but, but, I want "MORE SHOUT"
Alien Entity
Location: North East UK
Posts: 6,358
I'm InSpace.
AKA - CV4004. You've tried one!The standard ECC83 is CV492 (I think)
The M8137 (or CV4004 in army speak) is an 'SQ' version (or 'reliable valve') of the ECC83, I have an article from the 50's covering this. I'll forward a photo-copy.... SQ = Special Quality.
Marco... We've been through this before ya big daft muppet!!!
Last edited by Mike; 14-10-2008 at 17:55.
Shian7
--------------------------------------------------------
Kudakutemo
kudakutemo
ari mizu-no tsuki
Though it be be broken -
broken again - still it's there:
the moon on the water.
- Choshu.
Trade Member (Manufacturer)
Location: Wales
Posts: 37
Oooh, is the Cv4004 the same as M8137 then, can we confirm this?AKA - CV4004. You've tried one!
Alien Entity
Location: North East UK
Posts: 6,358
I'm InSpace.
Yes!
Shian7
--------------------------------------------------------
Kudakutemo
kudakutemo
ari mizu-no tsuki
Though it be be broken -
broken again - still it's there:
the moon on the water.
- Choshu.
Trade Member (Manufacturer)
Location: Wales
Posts: 37
In that case I have some and not tried them as yet.
Now then, where....are they
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