Just snagged a matched quad of NOS 1959 RCA 5691 Black-plate Red base’s from a chap in Spain. Only been on the tester, never been used.
Should do me nicely for a few years.
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I'm Rob.
SCORE!
Just snagged a matched quad of NOS 1959 RCA 5691 Black-plate Red base’s from a chap in Spain. Only been on the tester, never been used.
Should do me nicely for a few years.
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What are they for Rob?
Barry
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I'm Rob.
For my buffer stage. It has two valves rather than four, so two will go in the ‘cupboard of Hi-Fi paraphernalia’ for a couple of years or more.
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They should do 10000 hours anyway, or about 10 hours 365 days a year for the next 3 years!
SS
CD Teac VRDS25X(Audiotuned) DAC Caiman SEG+15V PSU+Dorado DECK 1210 Mat Crystal Audio Mods MN Base/Bearing/Platter+Ebony armboard Feet Isonoe/Ebony PSU Paul Hynes SR7EHD-27XL/DCSXL Ag DC lead/3 Stage Regs/Recap PCB+No Pitch/Strobe/Light ARM SME V(Kondo Ag Rewire&Tags) MC Cadenza Black FGS CABLES Arm Yannis SPD-4 IC Yannis 222 Litz+Ag bullets Power WAR PRE ATC SCA2 SPEAKERS ATC 50ASL STANDS Atacama PHONO Sugden Masterclass PA4 SUT Ortofon ST80SE POWER PSAudio P10
VALVE
PRE Croft Epoch(Modified) AMP Sondex S100 (Modified) SPEAKERS Tannoy 15"MG+RFC Warwick cabs+ Reference XO DECKS Garrard301/401 (Bastin) Mat Teunto Bearings 301/401(Bastin) Plinth Moldovan/Bastin Arms 3009/3012(Ikeda Ag wired) SME V 12 PSU Eagle+Tachometer MC Ag Meister v2 / Royall N SPU's CABLES Arm Yannis 420.5 Litz+ Speaker 10mm Cu + WBT-0681 Ag IC Oyaide FTVS-510 AgWBT 0110Ag Phonostage Paradise(4 Box Modded) / EAR 834 Clone (modded)
REAL SOUND
PRE Radford SC25 (Mullard ECC83/82) POWER RADFORD STA25 Renaissance (Electroharmonix EL34) SPEAKERS Celestion Ditton 15 (Duelund Rewired/Jantzen+Duelund Recapped) CABLES Speaker - Duelund AWG 12IC - Belden 8402+Switchcraft RCA
Fount Master & Moderator
Location: Essex
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I'm openingabottleofwine.
Ah - your AD Audio design. Are they an alternative to the 6N9Ss?
Barry
Senior Member
Location: Yorkshire
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I'm AnDreW.
An uprated version of the 6SL7Originally Posted by Barry
SS
CD Teac VRDS25X(Audiotuned) DAC Caiman SEG+15V PSU+Dorado DECK 1210 Mat Crystal Audio Mods MN Base/Bearing/Platter+Ebony armboard Feet Isonoe/Ebony PSU Paul Hynes SR7EHD-27XL/DCSXL Ag DC lead/3 Stage Regs/Recap PCB+No Pitch/Strobe/Light ARM SME V(Kondo Ag Rewire&Tags) MC Cadenza Black FGS CABLES Arm Yannis SPD-4 IC Yannis 222 Litz+Ag bullets Power WAR PRE ATC SCA2 SPEAKERS ATC 50ASL STANDS Atacama PHONO Sugden Masterclass PA4 SUT Ortofon ST80SE POWER PSAudio P10
VALVE
PRE Croft Epoch(Modified) AMP Sondex S100 (Modified) SPEAKERS Tannoy 15"MG+RFC Warwick cabs+ Reference XO DECKS Garrard301/401 (Bastin) Mat Teunto Bearings 301/401(Bastin) Plinth Moldovan/Bastin Arms 3009/3012(Ikeda Ag wired) SME V 12 PSU Eagle+Tachometer MC Ag Meister v2 / Royall N SPU's CABLES Arm Yannis 420.5 Litz+ Speaker 10mm Cu + WBT-0681 Ag IC Oyaide FTVS-510 AgWBT 0110Ag Phonostage Paradise(4 Box Modded) / EAR 834 Clone (modded)
REAL SOUND
PRE Radford SC25 (Mullard ECC83/82) POWER RADFORD STA25 Renaissance (Electroharmonix EL34) SPEAKERS Celestion Ditton 15 (Duelund Rewired/Jantzen+Duelund Recapped) CABLES Speaker - Duelund AWG 12IC - Belden 8402+Switchcraft RCA
Co-Founder/Administrator
Location: Norfolk, UK
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I'm Rob.
What he said. The 5691’s are the holy grail of 6SL7 replacements. I have the Melz 6H9Cs in at the moment, which are very very good indeed, but these are the best of the lot apparently.
The buffer is on around 14 hours a day (on when I wake up, off when I go to bed - the system plays pretty much all day). That’s about 5,000 hours a year so these should do me four years, or more hopefully.
Senior Member
Location: Yorkshire
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I'm AnDreW.
Have you got the 5 hole version of the Melz? If so, interested in selling?
SS
CD Teac VRDS25X(Audiotuned) DAC Caiman SEG+15V PSU+Dorado DECK 1210 Mat Crystal Audio Mods MN Base/Bearing/Platter+Ebony armboard Feet Isonoe/Ebony PSU Paul Hynes SR7EHD-27XL/DCSXL Ag DC lead/3 Stage Regs/Recap PCB+No Pitch/Strobe/Light ARM SME V(Kondo Ag Rewire&Tags) MC Cadenza Black FGS CABLES Arm Yannis SPD-4 IC Yannis 222 Litz+Ag bullets Power WAR PRE ATC SCA2 SPEAKERS ATC 50ASL STANDS Atacama PHONO Sugden Masterclass PA4 SUT Ortofon ST80SE POWER PSAudio P10
VALVE
PRE Croft Epoch(Modified) AMP Sondex S100 (Modified) SPEAKERS Tannoy 15"MG+RFC Warwick cabs+ Reference XO DECKS Garrard301/401 (Bastin) Mat Teunto Bearings 301/401(Bastin) Plinth Moldovan/Bastin Arms 3009/3012(Ikeda Ag wired) SME V 12 PSU Eagle+Tachometer MC Ag Meister v2 / Royall N SPU's CABLES Arm Yannis 420.5 Litz+ Speaker 10mm Cu + WBT-0681 Ag IC Oyaide FTVS-510 AgWBT 0110Ag Phonostage Paradise(4 Box Modded) / EAR 834 Clone (modded)
REAL SOUND
PRE Radford SC25 (Mullard ECC83/82) POWER RADFORD STA25 Renaissance (Electroharmonix EL34) SPEAKERS Celestion Ditton 15 (Duelund Rewired/Jantzen+Duelund Recapped) CABLES Speaker - Duelund AWG 12IC - Belden 8402+Switchcraft RCA
Co-Founder/Administrator
Location: Norfolk, UK
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I'm Rob.
No sadly, they’re the solid anode version. Although I can’t imagine how much better the holed versions are - they are absolutely incredible valves!
They are the metal base OTK versions of course.
Co-Founder/Administrator
Location: Norfolk, UK
Posts: 5,344
I'm Rob.
Crikey o’blimey! These 5691s are GOOD! The differences between these and the excellent 1950’s Melz metal base OTK 6H9Cs are not vast, but there is a difference. I’ve only had the 5691s in for half an hour so they’re only really getting into their stride, but the noticeable areas are bass weight (deep and clear, and also more impact) and the presence in the midrange.
I’m only watching the tele at the moment (Lucifer - if you haven’t seen it, it’s great!) but even with Netflix’s fairly poor audio processing, the 5691s show their prowess. I’ll do some serious critical listening after I have a couple of dozen hours on them, but already I’m impressed.
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