Site Owner/Administrator
Location: Wrexham, North Wales, UK
Posts: 110,012
I'm AudioAl'sArbiterForPISHANTO.
Nick G's OTL headphone amp design
I'm currently listening to Nick's prototype, the design of which is featured on the Hi-fi Collective site below:
http://www.hificollective.co.uk/pdf/otl_head.pdf
It sounds absolutely superb, and one of the finest headphone amplifiers I've ever had the pleasure to listen to! I intend to have one built myself and put into a smaller case
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!!!
Fount Master & Moderator
Location: Essex
Posts: 32,036
I'm openingabottleofwine.
Like it. Any idea of cost?Originally Posted by Marco
I'm currently listening to Nick's prototype, the design of which is featured on the Hi-fi Collective site below:
http://www.hificollective.co.uk/pdf/otl_head.pdf
It sounds absolutely superb, and one of the finest headphone amplifiers I've ever had the pleasure to listen to! I intend to have one built myself and put into a smaller case
Marco.
Barry
Site Owner/Administrator
Location: Wrexham, North Wales, UK
Posts: 110,012
I'm AudioAl'sArbiterForPISHANTO.
You'd need to speak to Nick, mate, but a ballpark figure would be around £600
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!!!
Senior Member
Location: A Strangely Isolated Place in Suffolk with Far Away Trains Passing By...
Posts: 14,535
I'm David.
Looks good
Tear down these walls; Cut the ties that held me
Crying out at the top of my voice; Tell me now if you can hear me
Don McCorleone
Location: Galashiels
Posts: 13,696
I'm inthescottishmafia.
Course it is, Nick designed it! He doesn't let anything less than as good as he can make it, given the cost, out of the door.
Trade: Longdog Audio
Location: Halifax, UK
Posts: 1,399
I'm Nick.
Cash in a brown envelope as usual Ali?
:-)
Thanks Marco for posting the link. Its not as complex a build as it may look, its just an unusual shape for those of us used to normal PP and single ended amps. Other than the mains TX its all off the shelf stuff and as long as the setup instructions are followed its simple enough. And once its setup it seems nicely stable in use. The 6080's are only dissipating 5W a triode, so they should last for ages. 6AS7 should also work just fine.
Nick.
Site Owner/Administrator
Location: Wrexham, North Wales, UK
Posts: 110,012
I'm AudioAl'sArbiterForPISHANTO.
No worries, dude. It deserves to be seen as it's a fantastic piece of kit!Thanks Marco for posting the link.
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!!!
Don McCorleone
Location: Galashiels
Posts: 13,696
I'm inthescottishmafia.
Yep, that'll do fine Nick!
Trade: Longdog Audio
Location: Halifax, UK
Posts: 1,399
I'm Nick.
Cool, you know the address to send it to AliYep, that'll do fine Nick!
Nick.
Don McCorleone
Location: Galashiels
Posts: 13,696
I'm inthescottishmafia.
Posting Permissions
Reply With Quote