Never tried a ss buffer as such. Had a few valve ones. One ive got now is by far the best especially modded. Not always needed i will accept but in general if its not needed it doesnt do much if anything.
Never tried a ss buffer as such. Had a few valve ones. One ive got now is by far the best especially modded. Not always needed i will accept but in general if its not needed it doesnt do much if anything.
Regards,
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Arkless Electronics-Engineered to be better. Tel. 01670 530674 (after 1pm)
Modded Thorens TD150, Audio Technica AT-1005 MkII, Technics EPC-300MC, Arkless Hybrid MC phono stage, Arkless passive pre, Arkless 50WPC Class A SS power amp, (or) Arkless modded Leak Stereo 20, Modded Kef Reference 105/3's
ReVox PR99, Studer B62, Ferrograph Series 7, Tandberg TCD440, Hitachi FT-5500MkI, also FT-5500MkII
Digital: Yamaha CDR-HD1500 (Digital Swiss army knife-CD recorder, player, hard drive, DAC and ADC in one), PC files via 24/96 sound card and SPDIF, modded Philips CD850, modded Philips CD104, modded DPA Little Bit DAC. Sennheiser HD580 cans with Arkless Headphone amp.
Cables- free interconnects that come with CD players, mains leads from B&Q, dead kettles etc, extension leads from Tesco
OK well I've designed it and pro forma specs are as follows:
Frequency response: 0.15 Hz - 5000 KHz (no that's not a typing error)
Input impedance: 1 Megohm
Output impedance: 23 Ohm
THD: <0.005%
Maximum output level: 9V RMS
If anyone else wants one for the same £75 I'm doing the first one for Jerry at then orders to be in by noon tomorrow when I'll be ordering parts. I should have quoted a bit more but will honour this one and any orders placed by noon tomorrow at that price.
Arkless Electronics-Engineered to be better. Tel. 01670 530674 (after 1pm)
Modded Thorens TD150, Audio Technica AT-1005 MkII, Technics EPC-300MC, Arkless Hybrid MC phono stage, Arkless passive pre, Arkless 50WPC Class A SS power amp, (or) Arkless modded Leak Stereo 20, Modded Kef Reference 105/3's
ReVox PR99, Studer B62, Ferrograph Series 7, Tandberg TCD440, Hitachi FT-5500MkI, also FT-5500MkII
Digital: Yamaha CDR-HD1500 (Digital Swiss army knife-CD recorder, player, hard drive, DAC and ADC in one), PC files via 24/96 sound card and SPDIF, modded Philips CD850, modded Philips CD104, modded DPA Little Bit DAC. Sennheiser HD580 cans with Arkless Headphone amp.
Cables- free interconnects that come with CD players, mains leads from B&Q, dead kettles etc, extension leads from Tesco
Being a bit of a numpty here - but what is the advantage of using a buffer stage? If the source output impedance is low, and the input impedance of the item next in line is high, what is the problem?
Barry
I've no idea... But the customer is always right.... and so the customer will get a very good buffer stage which will do exactly what the specs describe. It will buffer from high impedance, giving zero voltage gain, a wide frequency response, very low distortion and offer a a very low output impedance, as seen by the next stage, of 23R. It will do so using discrete single ended circuitry. Adding one of these straight after a passive pre basically makes it an active pre of the purest possible topology.... and I'll try it in that context in my own system out of interest
Arkless Electronics-Engineered to be better. Tel. 01670 530674 (after 1pm)
Modded Thorens TD150, Audio Technica AT-1005 MkII, Technics EPC-300MC, Arkless Hybrid MC phono stage, Arkless passive pre, Arkless 50WPC Class A SS power amp, (or) Arkless modded Leak Stereo 20, Modded Kef Reference 105/3's
ReVox PR99, Studer B62, Ferrograph Series 7, Tandberg TCD440, Hitachi FT-5500MkI, also FT-5500MkII
Digital: Yamaha CDR-HD1500 (Digital Swiss army knife-CD recorder, player, hard drive, DAC and ADC in one), PC files via 24/96 sound card and SPDIF, modded Philips CD850, modded Philips CD104, modded DPA Little Bit DAC. Sennheiser HD580 cans with Arkless Headphone amp.
Cables- free interconnects that come with CD players, mains leads from B&Q, dead kettles etc, extension leads from Tesco
Arkless Electronics-Engineered to be better. Tel. 01670 530674 (after 1pm)
Modded Thorens TD150, Audio Technica AT-1005 MkII, Technics EPC-300MC, Arkless Hybrid MC phono stage, Arkless passive pre, Arkless 50WPC Class A SS power amp, (or) Arkless modded Leak Stereo 20, Modded Kef Reference 105/3's
ReVox PR99, Studer B62, Ferrograph Series 7, Tandberg TCD440, Hitachi FT-5500MkI, also FT-5500MkII
Digital: Yamaha CDR-HD1500 (Digital Swiss army knife-CD recorder, player, hard drive, DAC and ADC in one), PC files via 24/96 sound card and SPDIF, modded Philips CD850, modded Philips CD104, modded DPA Little Bit DAC. Sennheiser HD580 cans with Arkless Headphone amp.
Cables- free interconnects that come with CD players, mains leads from B&Q, dead kettles etc, extension leads from Tesco
Here's an extra I'll put in, having just thought of it... I'll make the output impedance 75 Ohms. Still well low, but matches the characteristic impedance of most coax interconnects used at audio frequencies...... (Puts tin foil hat down...) I don't expect it to make any difference and theory says it won't, but I've read a few "audiophile things" claiming it makes a difference... and as all it takes is to replace two resistors with two different resistors, it costs nowt... There's no down side to it and it's one less thing to worry about if you believe interconnects matter as yes, you are driving the cable at its correct characteristic impedance.
Technical types move away from the keyboard! Yes I know that the interconnect would need to be several miles long for it to matter... As I say, and you surely must agree, there's no down side to it... hey I'm reaching out to the subjectivists in unknown territory here!
Arkless Electronics-Engineered to be better. Tel. 01670 530674 (after 1pm)
Modded Thorens TD150, Audio Technica AT-1005 MkII, Technics EPC-300MC, Arkless Hybrid MC phono stage, Arkless passive pre, Arkless 50WPC Class A SS power amp, (or) Arkless modded Leak Stereo 20, Modded Kef Reference 105/3's
ReVox PR99, Studer B62, Ferrograph Series 7, Tandberg TCD440, Hitachi FT-5500MkI, also FT-5500MkII
Digital: Yamaha CDR-HD1500 (Digital Swiss army knife-CD recorder, player, hard drive, DAC and ADC in one), PC files via 24/96 sound card and SPDIF, modded Philips CD850, modded Philips CD104, modded DPA Little Bit DAC. Sennheiser HD580 cans with Arkless Headphone amp.
Cables- free interconnects that come with CD players, mains leads from B&Q, dead kettles etc, extension leads from Tesco
Location: gone
Posts: 11,519
I'm gone.
.... don't forget to add a sprinkle of audiophile magic flooby-dust, Jez.
You know, I'm getting quite excited by this, if expectation bias has anything to do with it I am going to be very happy with Jez's new buffer.
Feel free to post some pics of the construction.
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