Site Owner/Administrator
Location: Wrexham, North Wales, UK
Posts: 110,012
I'm AudioAl'sArbiterForPISHANTO.
Lol!! I do not dismiss anything until I've heard it - I never have, and never will...
Therefore, for me, no conclusive opinions have been reached!
All I said was that I doubt the NAD would be my thing, based on what I've heard before from digital amplifiers.
However, if I get the opportunity to listen to one, and it blew me away, I'd be the first to say so here, so there!
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!!!
Spotify + Facebook Moderator / Chilled-Out Wino and only here for the shilling
Location: Sunny Suffolk, UK
Posts: 15,990
I'm WrappingALilacCurtainAroundMyBobby.
That's all right then! (Doesn't look as sexy as your copper amp though!)Originally Posted by Marco
Lol!! I do not dismiss anything until I've heard it - I never have, and never will...
Therefore, for me, no conclusive opinions have been reached!
All I said was that I doubt the NAD would be my thing, based on what I've heard before from digital amplifiers.
However, if I get the opportunity to listen to one, and it blew me away, I'd be the first to say so here, so there!
Marco.
Alex
Main System: Digital: HP Laptop/M2Tech Hiface/Logitech Media Server/FLAC; Marantz SA7001 KI Signature SACD Player and other digital stuff into Gatorised Beresford Caiman DAC Vinyl: Garrard 401/SME 3009 SII Improved/Sumiko HS/Nagaoka MP-30
Amplifier: Rega Brio R. Speakers: Spendor SP1. Cables: Various, mainly Mark Grant. Please see "about me" for the rest of my cr@p! Gallery
A.o.S. on Facebook - A.o.S. on Spotify - A.o.S. on Twitter
There is only one way to avoid criticism: do nothing, say nothing and be nothing Aristotle
Site Owner/Administrator
Location: Wrexham, North Wales, UK
Posts: 110,012
I'm AudioAl'sArbiterForPISHANTO.
And me, dude!Which is precisely why i like low feedback (or zero feedback) class A power amplifiers.
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!!!
AV Room Forum Leader / Spaced Out
Location: North Cambs UK, Earth, Sol, Orion - Cygnus arm of galaxy
Posts: 11,166
I'm MadeOfDeadGiantStarsThatExplodedEonsAgo.
I'm not prejudiced against anything that i can think of, i was just stating a preference
You know the one, eight of of ten owners said their prats prefered it
Bests, Mark
"We must believe in free will. We have no choice"Isaac Bashevis Singer
It occurs to me that I know very little about my DH220 other than the published stats I've found up to now. What they don't tell me is whether it's a Class A, A/B or B. Can someone enlighten me? It sure gets hot enough to be a Class A
Trade: Longdog Audio
Location: Halifax, UK
Posts: 1,399
I'm Nick.
I would guestimate from the power consumption in this linkIt occurs to me that I know very little about my DH220 other than the published stats I've found up to now. What they don't tell me is whether it's a Class A, A/B or B. Can someone enlighten me? It sure gets hot enough to be a Class A
http://www.hafler.com/techsupport/pd...20_amp_man.pdf
Thats its A for the first 15W the B after that. So A/B
Nick.
AV Room Forum Leader / Spaced Out
Location: North Cambs UK, Earth, Sol, Orion - Cygnus arm of galaxy
Posts: 11,166
I'm MadeOfDeadGiantStarsThatExplodedEonsAgo.
Odd, i made it 1.2W RMS class A into 8 ohms with a bias of 0.275A on the output stage
0.275 x 2 gives the peak current in class A before the mosfets on one half cut off or 0.55A peak. 0.55 x 8 ohms is 4.4V peak, RMS voltage is peak/1.414 = 3.111V RMS, square that & divide by the speaker resistance = 1.2W
Bests, Mark
"We must believe in free will. We have no choice"
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