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Nelson Pass Xono Clone - MM/MC XLR Phono Preamp

End: 22.09. 2023 10:45:54 on Friday
  • Condition: Used
  • Price: 925.0 EUR FESTPREIS
  • Status: sold
  • Item number: 325803370349
  • Seller: jsg069 (721|100.0%)
  • Seller information: non commercial
  • Item location: Weißenstadt Deutschland
  • Ships to: Worldwide
  • Shipping: 19,99 EUR
  • on EBAY
  • Description

    Nelson Pass Xono Clone - MM/MC  XLR  Phono PreampVerkaufe meinen Pass Labs XOno Clone für MM/MC Systeme, inkl. XLR Ausgang und sep. Netzteil. Neuwertiger Zustand, MM/MC laufen einwandfrei, XLR mangels Anschluss am Verstärker nicht benutzt. Tierfreier Nichtraucher Haushalt. Keine Garantie, Gewährleistung, oder Rücknahme möglich.

Pass Aleph 60 Mono Clones; Expensive and Correct; GORGEOUS Pure Class A Sound!

End: 20.09. 2023 16:13:07 on Wednesday
  • Condition: Used
  • Price: 1213.88 EUR Auktion
  • Status: sold
  • Item number: 235194232508
  • Bids: 6
  • Seller: districtattorneyhall (1632|100.0%)
  • Seller information: non commercial
  • Item location: Winston-Salem, North Carolina USA
  • Ships to: US
  • Shipping: EUR
  • on EBAY
  • Description

    ***NOTE: EACH AMP WILL BE INDIVIDUALLY DOUBLE-BOXED AND HEAVILY PADDED FOR SECURE SHIPPING *** Up for bid is a wonderful pair of Pass Aleph 60 monoblock clone amplifiers. These amps each provide 60 watts of Class A power. The Aleph 60 is the monoblock version of the famous stereo Aleph 5. The Aleph sound is known for fabulous air and space, liquid mids, authoritative bass, and shimmering highs - tube-like solid state. The amps are only 8 months young and now properly burned in. If you've not heard Pass Labs Aleph Series, here is a chance to do so with a modern pair of monoblocks that are hand matched and built with the finest parts. For the engineers and discriminating audiophiles among you, the following demonstrates the exceptional quality of these amplifiers and fidelity to the Pass Aleph build: The amps use a CRCRC power supply, shielded Antek toroids, and rectifier snubbers or a stiff and quiet power supply. The active parts are precision-matched Vishay current source and output MOSFETs, and precision-matched Harris/Fairchild input stage MOSFETs. The amp boards use top-tier Elna Silmic II capacitors bypassed with Wima film caps. The amps were burned in and calibrated for bias, gain, and offset. Balanced (XLR) and Single-Ended (RCA) Inputs. These Class A amps run hot by design, so they must be placed where they have plenty of ventilation. The amp stays true to the Aleph recipe with a few enhancements. The PCBs were designed based on the Aleph 30 and 60 schematics. They can be used to make the other MOSFET-based 2 gain stage Aleph variants (Aleph 3, Aleph 2, Aleph 5, Aleph 1.2). A few enhancements were added to the design: · Added film bypass caps to the 220uF caps in the circuit · Added pot to adjust Aleph Current to precisely 50% · Added pot to adjust DC Offset (in reality, don’t need it based on MOSFET matching, more below) · Added pot to adjust overall amp bias current. · Enhancements that Nelson called out on the “Aleph Design Reloaded” thread. https://www.diyaudio.com/community/threads/the-aleph-design-reloaded.267857/ For complete schematic detail, go to the “Classic Aleph” builder’s thread. The Aleph 60 build document is in post #1, and it shows all of the detailed schematics (original and this amp) and build details. https://www.diyaudio.com/community/threads/classic-aleph-amplifier-for-modern-ums-chassis-builders-thread.382316/ The power MOSFETs came from a pool of over 1000 for matching. This results in the 12 MOSFETs for each channel being matched within less than 5mV (extremely close). For context, Nelson has stated that within 0.1V (100mV) is good enough. 100mV is good, <5mV is great. The input stage MOSFETs are Nelson’s favorite Harris/Fairchild SFP9610. These came from a pool of 850 for matching. Most amps I have built or parts kits I have sold have the 6 required MOSFETs for 2 channels within 1mV across the 6. This results in very good output DC Offset performance. The original Aleph 60 has a 120,000 uf cap bank for the power supply filter, 60,000uF for the positive power supply rail, and 60,000uF for the negative power supply rail. It is a single cap bank without an additional filter stage. This build uses a CRCRC filter cap bank with a total of 176,000uF of capacitance. 44kuF per rail, then parallel 5W power resistors, 22kuF, then parallel 5W power resistors, and final 22kuF caps. This results in lower ripple voltage due to additional capacitance AND 2 filter stages. For context, the standard First Watt amps use a CRC power supply, and this build adds an additional filter stage. Dead silence is the design goal. Adding additional capacitance and using 2 RC stages in the power supply dropped the power supply ripple to very low levels. This build uses 400VA Antek transformers with a cover. The reason for this is the 400VA is the largest offering by Antek to use an integrated shield in the transformer, and the 400VA is the largest transformer cover they offer. This choice drops the noise floor as low as possible. The rectifier bridges use a snubber circuit that damps out ringing between the transformer and the rectifiers. This is one additional way to minimize power supply noise and lower the amplifier’s noise floor. Read all about the snubber concept here: https://www.diyaudio.com/community/threads/simple-no-math-transformer-snubber-using-quasimodo-test-jig.243100/ Thanks for looking and ENJOY THE MUSIC!

Pass First Watt F5 Stereo Class A Amplifier Clone

End: 08.09. 2023 15:53:20 on Friday
  • Condition: Used
  • Price: 600.17 EUR Auktion
  • Status: sold
  • Item number: 295906930103
  • Bids: 20
  • Seller: congsec51 (449|100.0%)
  • Seller information: non commercial
  • Item location: Melbourne, Florida USA
  • Ships to: US
  • Shipping: 0,0 EUR
  • on EBAY
  • Description

    This is a Nelson Pass designed First Watt model F5 that I built. 25 watts per channel class A. Two Hammond 1182G18 power transformers at 225 VA each for a total of 450 VA. These transformers retail for $89 each. All Vishay precision resistors. Massive heat sinks. I used a high quality circuit board widely available here on eBay. (see pic) No hum. Dead quiet. Power supply filter board is the one recommended for First Watt builds. You will find that this amp is evenly balanced across the frequency spectrum unlike cheap solid state amps that tend to have bass and highs but all the midrange is sucked out. Being a class A amp it runs HOT. THIS IS NORMAL. The heat sinks get up to about 50 degrees C which is how it should run. You can buy a new First Watt amp for about $4,000. Heres an opportunity to see what all the fuss is about for a lot less. Power cord included. On Sep-01-23 at 18:51:04 PDT, seller added the following information: I also have for sale here on eBay a Pass designed ACA amp which is a great platform for building any of the First Watt amplifiers.

Hi Fi Audio Stereo Pre Amplifier Class A Pass Labs Aleph P Clone

End: 12.08. 2023 09:47:30 on Saturday
  • Condition: New: Other
  • Price: 317.47 EUR FESTPREIS
  • Status: unsold
  • Item number: 285315814300
  • Seller: shaumoore1 (473|100.0%)
  • Seller information: non commercial
  • Item location: Swindon Großbritannien
  • Ships to: GB
  • Shipping: 12,95 EUR
  • on EBAY
  • Description

    For sale is a Pass Labs 1.7 Clone Hi Fi Pre-amplifier based on IRF610/9610 MOSFET Class A design with 2 balanced inputs, 2 single ended inputs and balanced/single-ended outputs. It has both RCA and XLR inputs and can convert from single-ended to balanced and vice versa. This is a 230V system with twin internal R-core transformers and a resistor ladder / relay based volume control. There is no remote volume control. I believe it has around 20dB of gain. The unit was manufactured in China to what appears to be a good standard. I bought this for a project that was never completed. I have tested that it works correctly. It looks new.

Nelson Pass First Watt F4 (Clone) Class A Amplifier

End: 29.06. 2023 20:03:43 on Thursday
  • Condition: Used
  • Price: 366.3 EUR Auktion
  • Status: sold
  • Item number: 155618320198
  • Bids: 3
  • Seller: ndmatheson2011 (1742|100.0%)
  • Seller information: non commercial
  • Item location: WALLINGTON Großbritannien
  • Ships to: GB
  • Shipping: 62,72 EUR
  • on EBAY
  • Description

    Nelson Pass First Watt F4 25W Class A Amplifier, built inside NAD 208 case. Smooth detailed sound not for low efficiency speakers. Like everything else from First Watt the F4 is a unique amplifier. It has no feedback and no voltage gain, only current gain, it will deliver up to 25 watts into 8 ohms and 50 watts into 4 ohms. It is built as dual-mono circuit boards, powered by a 500w toroidal transformer and filtered with 86000uf per channel. It has a soft starter with thermal protection, speaker protection, rhodium plated RCA and banana sockets, input and output wires are silver plated OFC. The combination of a simple Class A circuit operated without feedback and the good objective performance gives us a superb sounding amplifier. The low distortion, bandwidth extension, and high damping results in midrange clarity, treble detail, and control on the bottom end. While these are available from most good solid state amplifiers, the F4 also brings depth, imaging, midrange warmth and top-end sweetness.

Nelson Pass B1 Buffer Preamp Clone

End: 23.05. 2023 02:14:11 on Tuesday
  • Condition: Used
  • Price: 251.7 EUR FESTPREIS
  • Status: sold
  • Item number: 354794185149
  • Seller: magnepanman (431|100.0%)
  • Seller information: non commercial
  • Item location: Moline, Illinois USA
  • Ships to: US
  • Shipping: 59,69 EUR
  • on EBAY
  • Description

    This is a custom built Pass B1 buffer preamp that I DIYd over a year ago.I built this for my lab as a reference preamp and its served well but its time to let it go as Ive found a better preamp for my needs. I built this using the PCB + four JFET package available as PASSDIY.com. The potentiometer is a genuine Alps Blue, and the case is of chinsese origin. The power supply is a Meanwell 18v PSU. The wire used is silver plated teflon. This is a fantastic preamp for someone needing a simple, transparent, and clean buffer between their source component and preamp for optimum signal transfer. If you have a dac with lots of voltage on tap, this is perfect to interface it with a matching amp. Heres an opportunity to own a fantastic preamp at a fraction of the price of the Firstwatt model, despite them being identical. I will not ship this item outside of the United States unless the buyer uses the Ebay International Shipping Program, otherwise the order will be cancelled.

Threshold NS10 clone preamplificatore linea - line preamplifier by Nelson Pass

End: 04.10. 2021 14:32:18 on Monday
  • Condition: Used
  • Price: 39.0 EUR Auktion
  • Status: unsold
  • Item number: 165094521842
  • Counter: 15
  • Bids: 0
  • Seller: claneg2010 (206|95.0%)
  • Seller information: non commercial
  • Item location: BARI Italien
  • Ships to: IT
  • Shipping: 20,0 EUR
  • on EBAY

Threshold NS10 clone preamplificatore linea - line preamplifier by Nelson Pass

End: 27.09. 2021 13:59:47 on Monday
  • Condition: Used
  • Price: 39.0 EUR Auktion
  • Status: unsold
  • Item number: 165082700130
  • Counter: 17
  • Bids: 0
  • Seller: claneg2010 (206|95.0%)
  • Seller information: non commercial
  • Item location: BARI Italien
  • Ships to: IT
  • Shipping: 20,0 EUR
  • on EBAY

Nelson Pass Clone F5 Turbo 50w Class A x 2 First Watt Labs

End: 10.09. 2021 18:12:53 on Friday
  • Condition: Used
  • Price: 1358.95 EUR FESTPREIS
  • Status: unsold
  • Item number: 255078486406
  • Counter: 1823
  • Seller: 3mahighendaudio (573|100.0%)
  • Seller information: Commercial (with base shop)
  • Item location: Houston, Texas USA
  • Ships to: US
  • Shipping: 231,44 EUR
  • on EBAY

Threshold NS10 clone preamplificatore linea - line preamplifier by Nelson Pass

End: 11.07. 2021 19:52:19 on Sunday
  • Condition: Used
  • Price: 39.0 EUR Auktion
  • Status: unsold
  • Item number: 164943764047
  • Counter: 6
  • Bids: 0
  • Seller: claneg2010 (204|96.8%)
  • Seller information: non commercial
  • Item location: BARI Italien
  • Ships to: IT
  • Shipping: 20,0 EUR
  • on EBAY

Threshold NS10 clone preamplificatore linea - line preamplifier by Nelson Pass

End: 04.07. 2021 10:33:57 on Sunday
  • Condition: Used
  • Price: 39.0 EUR Auktion
  • Status: unsold
  • Item number: 164932261248
  • Counter: 19
  • Bids: 0
  • Seller: claneg2010 (204|96.8%)
  • Seller information: non commercial
  • Item location: BARI Italien
  • Ships to: IT
  • Shipping: 20,0 EUR
  • on EBAY

Threshold NS10 clone preamplificatore linea - line preamplifier by Nelson Pass

End: 26.06. 2021 22:42:13 on Saturday
  • Condition: Used
  • Price: 39.0 EUR Auktion
  • Status: unsold
  • Item number: 164921167451
  • Counter: 15
  • Bids: 0
  • Seller: claneg2010 (204|96.9%)
  • Seller information: non commercial
  • Item location: BARI Italien
  • Ships to: IT
  • Shipping: 20,0 EUR
  • on EBAY

Threshold NS10 clone preamplificatore linea - line preamplifier by Nelson Pass

End: 19.06. 2021 22:34:05 on Saturday
  • Condition: Used
  • Price: 39.0 EUR Auktion
  • Status: unsold
  • Item number: 164910243571
  • Counter: 21
  • Bids: 0
  • Seller: claneg2010 (204|96.9%)
  • Seller information: non commercial
  • Item location: BARI Italien
  • Ships to: IT
  • Shipping: 20,0 EUR
  • on EBAY

Threshold NS10 clone preamplificatore linea - line preamplifier by Nelson Pass

End: 12.06. 2021 22:19:52 on Saturday
  • Condition: Used
  • Price: 39.0 EUR Auktion
  • Status: unsold
  • Item number: 164899825242
  • Counter: 32
  • Bids: 0
  • Seller: claneg2010 (204|97.0%)
  • Seller information: non commercial
  • Item location: BARI Italien
  • Ships to: IT
  • Shipping: 20,0 EUR
  • on EBAY

Threshold NS10 clone preamplificatore linea - line preamplifier by Nelson Pass

End: 05.06. 2021 22:12:48 on Saturday
  • Condition: Used
  • Price: 39.0 EUR Auktion
  • Status: unsold
  • Item number: 164889363134
  • Counter: 41
  • Bids: 0
  • Seller: claneg2010 (204|97.0%)
  • Seller information: non commercial
  • Item location: BARI Italien
  • Ships to: IT
  • Shipping: 20,0 EUR
  • on EBAY

Threshold NS10 clone preamplificatore linea - line preamplifier by Nelson Pass

End: 29.05. 2021 22:01:30 on Saturday
  • Condition: Used
  • Price: 39.0 EUR Auktion
  • Status: unsold
  • Item number: 164879083448
  • Counter: 32
  • Bids: 0
  • Seller: claneg2010 (204|97.0%)
  • Seller information: non commercial
  • Item location: BARI Italien
  • Ships to: IT
  • Shipping: 20,0 EUR
  • on EBAY

Threshold NS10 clone preamplificatore linea - line preamplifier by Nelson Pass

End: 22.05. 2021 21:44:23 on Saturday
  • Condition: Used
  • Price: 39.0 EUR Auktion
  • Status: unsold
  • Item number: 164868125769
  • Counter: 9
  • Bids: 0
  • Seller: claneg2010 (204|97.0%)
  • Seller information: non commercial
  • Item location: BARI Italien
  • Ships to: IT
  • Shipping: 20,0 EUR
  • on EBAY

Threshold NS10 clone preamplificatore linea - line preamplifier by Nelson Pass

End: 15.05. 2021 17:22:07 on Saturday
  • Condition: Used
  • Price: 39.0 EUR Auktion
  • Status: unsold
  • Item number: 164855931160
  • Counter: 20
  • Bids: 0
  • Seller: claneg2010 (204|97.1%)
  • Seller information: non commercial
  • Item location: BARI Italien
  • Ships to: IT
  • Shipping: 20,0 EUR
  • on EBAY

Threshold NS10 clone preamplificatore linea - line preamplifier by Nelson Pass

End: 08.05. 2021 13:42:50 on Saturday
  • Condition: Used
  • Price: 39.0 EUR Auktion
  • Status: unsold
  • Item number: 164843074269
  • Counter: 16
  • Bids: 0
  • Seller: claneg2010 (204|97.1%)
  • Seller information: non commercial
  • Item location: BARI Italien
  • Ships to: IT
  • Shipping: 20,0 EUR
  • on EBAY

1pcs xc1 (PASS B1 BUFFER) CLONE preamp bare PCB

End: 02.04. 2021 13:23:49 on Friday
  • Condition: New
  • Price: 12.51 EUR FESTPREIS
  • Status: sold
  • Item number: 122485385739
  • Counter: 3221
  • Seller: lc20110801 (3135|99.2%)
  • Seller information: Commercial (with base shop)
  • Item location: Guangzhou China
  • Ships to: GB
  • Shipping: 0,0 EUR
  • on EBAY

Amplificatore Finale Pass Aleph 3 Clone 30+30 W in classe a

End: 16.03. 2021 20:58:58 on Tuesday
  • Condition: New: Other
  • Price: 400.0 EUR Auktion
  • Status: unsold
  • Item number: 265082561796
  • Counter: 82
  • Bids: 0
  • Seller: caterinpelonar-0 (43|100.0%)
  • Seller information: non commercial
  • Item location: Cassino Italien
  • Ships to: IT
  • Shipping: 0,0 EUR
  • on EBAY

Threshold NS10 clone preamplificatore linea - line preamplifier by Nelson Pass

End: 12.03. 2021 13:30:00 on Friday
  • Condition: Used
  • Price: 39.0 EUR Auktion
  • Status: unsold
  • Item number: 164741834341
  • Counter: 20
  • Bids: 0
  • Seller: claneg2010 (201|97.1%)
  • Seller information: non commercial
  • Item location: BARI Italien
  • Ships to: IT
  • Shipping: 20,0 EUR
  • on EBAY

Threshold NS10 clone preamplificatore linea - line preamplifier by Nelson Pass

End: 05.03. 2021 00:41:11 on Friday
  • Condition: Used
  • Price: 39.0 EUR Auktion
  • Status: unsold
  • Item number: 164724688856
  • Counter: 26
  • Bids: 0
  • Seller: claneg2010 (199|96.9%)
  • Seller information: non commercial
  • Item location: BARI Italien
  • Ships to: IT
  • Shipping: 20,0 EUR
  • on EBAY

Amplificatore Finale Pass Aleph 3 Clone 30+30 W in classe a

End: 02.03. 2021 20:58:31 on Tuesday
  • Condition: New: Other
  • Price: 400.0 EUR Auktion
  • Status: unsold
  • Item number: 265064777596
  • Counter: 66
  • Bids: 0
  • Seller: caterinpelonar-0 (43|100.0%)
  • Seller information: non commercial
  • Item location: Cassino Italien
  • Ships to: IT
  • Shipping: 0,0 EUR
  • on EBAY