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Does anyone use a passive preamp in their system? I remember back in the late 80s the passive preamps had somewhat of a following. I see a few manufacturers of purely passive devices today but they seem to not be as popular. I am curious to hear members stories of passive experiences.
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Marty -
Passive preamps were never my cup of tea. Just like non-alcoholic beer and decaffeinated coffee, there is no 'juice' there.Micro Seiki SX-8000 table with flywheel, SME 3012R arm, SME 312S arm, Lyra Etna SL and Dynavector XV-1S cartridges, ARC Ref 3 phono stage, Otari MX-55 tape deck, Ampex 350 repros, Roon Nucleus Plus server, PS Audio DSJ DAC, ARC Ref 6 pre, ARC Ref 75 amp, Parasound JC5 amp, JBL 4345 speakers, and Def Tech Ref subs. -
I used to have a PS audio unit about 15 yrs ago, but sometimes I needed more gain and at low volume settings it seemed like it rolled the highs a little. Otherwise it sounded superb.Magnepan 1.6 QR Loudspeakers, Amherst A-2000 MOSFET 150 WPC Amp, Conrad Johnson PV-10A Modded Tube Line & Phono Stage, Electrocompaniet MC II Class A Head Amp, Audio Technica AT-OC9XML Cart (Stereo) , Graham Engineering 2.2 Tonearm (Stereo) , VPI Aries-1 Turntable (Stereo) , VPI Clamp, Denon DL-102 Cart, (Mono) , Luxman Tonearm (Mono) , Kenwood KD-500 Turntable (Mono) , Michell Clamp, Marantz 20B Analog FM Tuner, Pioneer SACD, Onkyo DX-6800 CD Transport, DIY 24B/192K DAC, Sennheiser HD-650 Headphones, Headroom Max Balanced Headphone Amp, DIY Silver InterconnectsComment
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with a passive pre, the juice comes from the output buffers of the source components connected to its inputs.Originally posted by mep View PostMagnepan 1.6 QR Loudspeakers, Amherst A-2000 MOSFET 150 WPC Amp, Conrad Johnson PV-10A Modded Tube Line & Phono Stage, Electrocompaniet MC II Class A Head Amp, Audio Technica AT-OC9XML Cart (Stereo) , Graham Engineering 2.2 Tonearm (Stereo) , VPI Aries-1 Turntable (Stereo) , VPI Clamp, Denon DL-102 Cart, (Mono) , Luxman Tonearm (Mono) , Kenwood KD-500 Turntable (Mono) , Michell Clamp, Marantz 20B Analog FM Tuner, Pioneer SACD, Onkyo DX-6800 CD Transport, DIY 24B/192K DAC, Sennheiser HD-650 Headphones, Headroom Max Balanced Headphone Amp, DIY Silver InterconnectsComment
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Originally posted by JCOConnell View Post
There is zero voltage gain with a passive preamp and thus my "no juice" comment.Micro Seiki SX-8000 table with flywheel, SME 3012R arm, SME 312S arm, Lyra Etna SL and Dynavector XV-1S cartridges, ARC Ref 3 phono stage, Otari MX-55 tape deck, Ampex 350 repros, Roon Nucleus Plus server, PS Audio DSJ DAC, ARC Ref 6 pre, ARC Ref 75 amp, Parasound JC5 amp, JBL 4345 speakers, and Def Tech Ref subs.Comment
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true, but if your source components have high enough output voltage and good low source impedance, you can sometimes get away with a passive pre, especially if your power amp has a lot of voltage gain.Originally posted by mep View PostMagnepan 1.6 QR Loudspeakers, Amherst A-2000 MOSFET 150 WPC Amp, Conrad Johnson PV-10A Modded Tube Line & Phono Stage, Electrocompaniet MC II Class A Head Amp, Audio Technica AT-OC9XML Cart (Stereo) , Graham Engineering 2.2 Tonearm (Stereo) , VPI Aries-1 Turntable (Stereo) , VPI Clamp, Denon DL-102 Cart, (Mono) , Luxman Tonearm (Mono) , Kenwood KD-500 Turntable (Mono) , Michell Clamp, Marantz 20B Analog FM Tuner, Pioneer SACD, Onkyo DX-6800 CD Transport, DIY 24B/192K DAC, Sennheiser HD-650 Headphones, Headroom Max Balanced Headphone Amp, DIY Silver InterconnectsComment
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I think in general you are restricted to listening to digital with a passive device unless using a really high output cartridge. Just not enough gain. Older passive units had issues with the FR changing as a function of volume position. The only real one I had a chance to listen to was the Ensemble preamplifier years ago that allowed one to switch between passive and active versions. It was a long time ago but the number one issue with the passive option was a real loss in dynamics.
I know Brian was really high on the Teo (?) passive device at one time.
I also seem to remember some good reviews for the Music First passive device from the UK that used a transformer?Myles B. Astor, PhD, Administrator
Senior Editor, Positive-Feedback.com
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-Zellaton Plural Evo speakers
-Goldmund Telos 440 and 1000 Nextgen mono amps
-Goldmund Mimesis 37S Nextgen preamplifier
-Doshi EVO and Goldmund PH3.8 phonostage
-VPI Vanquish direct-drive turntable
-VPI 12-inch 3D Fat Boy dual pivot tonearm, VPI 12-inch 3D Fat Boy gimballed and SAT LM-12 arm
-Lyra Atlas SL Lambda, vdh Colibri Master Signature, Mutech Hayabusa,
-Technics RS1506 with Flux Magnetic heads, Doshi V3.0 tape stage (balanced)
-Assorted cables including Skogrand, Kubala-Sosna, Audience FrontRow; Audience FrontRow, Genesis Advanced Technologies , Goldmund and Ensemble Power Cords
-Accessories including Stillpoint Aperture panels, Cathedral Sound panels, Furutech NCF Nano AC receptacles; Silver Circle Tchaik 6 PLC, Symposium ISIS and SRA Craz 3 racks, Audiodharma Cable Cooker, Symposium Ultra and assorted SRA OHIO Class 2.3+ platforms.Comment
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I use a DIY passive in my system. Basically, a 10K TKD pot with two inputs and two outputs ( one fixed level to feed my headphone amp). It is remarkably transparent and neutral, and works well with both my digital system (an iFi iDac2) or my phono (a low output Dynavector 19a with an iFi iPhono. Haven't heard any active line stages yet in my price range that I would swap out for, though I am hoping to get the Rogue RP1 in for review sometime later this year. I've really liked what I've heard from their pricier preamps.Steve Lefkowicz
Senior Associate Editor at Positive Feedback
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Analog 1: Linn LP12 (MOSE/Hercules II), Ittok, Dynavector 10X5 MK.II Low, iPhono2/iPowerX; Analog 2: Pro-Ject RPM-1 Carbon, Talisman S, iFi iPhono.
Digital: Geekom Mini PC (i5, 16GB RAM, 512GB SSD, JRiver Media Center 29, Tidal HiFi, Qobuz Studio), iFi NEO iDSD, iFi iUSB3, iPurifier2, Audioquest Jitterbug FMJ.
Electronics: Jolida Fusion (fully upgraded) line-stage, DIY passive line-stage, Antique Sound Labs MG-SI15DT-S, Burson Timekeeper Virtuoso
Speakers: Tekton Perfect SET 15, Tekton Lore, Magneplaner .7
Interconnects: Morrow Audio MA1, Vermouth Audio Black Pearl, Audioquest Evergreen
Speaker cables: WyWyres Diamond, Morrow Audio SP4, Vermouth Audio Red Velvet, Audioquest Type 5
Digital cables: Aural Symphonics USB, iFi Gemini twin-head USB.
Accessories: Sound Organization turntable shelf, Mondo racks, Pangea Audio Vulcan rack, Pi Audio Group Über BUSS, Monster HTS2000 power conditioner, Kinetronics anti-static brush, Pro-Ject VC-S record cleaner, Spin Clean record cleaner.
Headphones: Schiit Valhalla amp, Burson Conductor Virtuoso Amp, Meze Audio 99 Classic and 99 Neo, Beyerdynamic DT770Pro 600 ohm, 1More Triple Driver Over Ear, 1More Triple Driver IEMComment
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I have been using a diy passive preamp( not the same, but different approaches to the design of passive) for the last 20 years, in that time I have had active preamps in the system to compare and always ended up with the passive again.
It is the naturalness/transparency and neutrality of the sound, that brings me back every time, active preamplifiers always color the sound to some degree.
I have told my story on an other forum, here it is.Last edited by banditcat200; 05-14-2016, 04:10 AM.Comment
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Maybe Myles should allow us to start a diy section.............Comment
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I am using a manufacturer design from Hattor that is very well made, fully balanced and remote controllable.
MartyComment
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+1 , I second the motion.Originally posted by jam View PostMagnepan 1.6 QR Loudspeakers, Amherst A-2000 MOSFET 150 WPC Amp, Conrad Johnson PV-10A Modded Tube Line & Phono Stage, Electrocompaniet MC II Class A Head Amp, Audio Technica AT-OC9XML Cart (Stereo) , Graham Engineering 2.2 Tonearm (Stereo) , VPI Aries-1 Turntable (Stereo) , VPI Clamp, Denon DL-102 Cart, (Mono) , Luxman Tonearm (Mono) , Kenwood KD-500 Turntable (Mono) , Michell Clamp, Marantz 20B Analog FM Tuner, Pioneer SACD, Onkyo DX-6800 CD Transport, DIY 24B/192K DAC, Sennheiser HD-650 Headphones, Headroom Max Balanced Headphone Amp, DIY Silver InterconnectsComment
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OK I have no problem with a DIY section. Just give me a couple of days to put the forum up. Am sorta backlogged from the weekend activities and trying to finish a few reviews.Originally posted by JCOConnell View PostMyles B. Astor, PhD, Administrator
Senior Editor, Positive-Feedback.com
________________________________________
-Zellaton Plural Evo speakers
-Goldmund Telos 440 and 1000 Nextgen mono amps
-Goldmund Mimesis 37S Nextgen preamplifier
-Doshi EVO and Goldmund PH3.8 phonostage
-VPI Vanquish direct-drive turntable
-VPI 12-inch 3D Fat Boy dual pivot tonearm, VPI 12-inch 3D Fat Boy gimballed and SAT LM-12 arm
-Lyra Atlas SL Lambda, vdh Colibri Master Signature, Mutech Hayabusa,
-Technics RS1506 with Flux Magnetic heads, Doshi V3.0 tape stage (balanced)
-Assorted cables including Skogrand, Kubala-Sosna, Audience FrontRow; Audience FrontRow, Genesis Advanced Technologies , Goldmund and Ensemble Power Cords
-Accessories including Stillpoint Aperture panels, Cathedral Sound panels, Furutech NCF Nano AC receptacles; Silver Circle Tchaik 6 PLC, Symposium ISIS and SRA Craz 3 racks, Audiodharma Cable Cooker, Symposium Ultra and assorted SRA OHIO Class 2.3+ platforms.Comment
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I've been using transformer based pre's for years and like them a lot. I don't need gain and will trade a smidgen of dynamics for lower noise.Comment
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