Monaural power amp devices are nothing special - there are a wide range of manufacturers.
But for me very special are pre-amplifiers and integrated amplifiers in a monaural design.
And such design's I prefer
Unfortunately I know only this examples from each kind of amp.
1) Monaural Pre-amplifier: only the currently available Pass XP30
Pass Laboratories
http://www.passlabs.com/pdfs/product manuals/XP-30_OM.pdf (Owner's Manual english)
and the legacy (vintage) model X0.2
http://www.passlabs.com/pdfs/old product manuals/x0.2_om.pdf (Owner's Manual)
DONG FONG AUDIO: Pass Labs X 0.2 PreAmp ( Used ) (Offer)
2) Monaural integrated Amplifier JVC AX-M9000
HiFi-Do McIntosh/JBL/audio-technica/Jeff Rowland/Accuphase
http://venetor-sound.com/main/AX-M9000-01.jpg
http://venetor-sound.com/main/AX-M9000-02.jpg
VICTOR ƒ‚ƒmƒ‰ƒ‹ƒvƒŠƒ�ƒCƒ“ƒAƒ“ƒvAX-M9000‚ÌŽd—l ƒrƒNƒ^�[
??????????????????AX-M9000??????????????RM-RE9000?
http://av.watch.impress.co.jp/docs/20060914/vic15.jpg
http://www.jvc.de/html/faq/highend/ax-m/2142/AX-M9000Deutsch.pdf (Owner's German)
JVC AX-M9000 Manuals, Support and Troubleshooting - Amps (Owner's english)
JVC AXM9000 Service Manual free download,schematics,datasheets,eeprom bins,pcb,repair info for test equipment and electronics
JVC AX-M9000 SM 2 Service Manual free download, schematics, eeprom, repair info for electronics
The preamp models X02 and XP30 are more consequently aligned to high performance, because the power supply has been extracted along with the operating/VF-display unit (with a lot of devices, which are critical by a close arrangement of the signal path) of the actual pre-amplifier devices.
This wasn't realized by the integrated Amp from JVC.
Who knows additional examples of this very rare genre ??
But for me very special are pre-amplifiers and integrated amplifiers in a monaural design.
And such design's I prefer
Unfortunately I know only this examples from each kind of amp.
1) Monaural Pre-amplifier: only the currently available Pass XP30
Pass Laboratories
http://www.passlabs.com/pdfs/product manuals/XP-30_OM.pdf (Owner's Manual english)
and the legacy (vintage) model X0.2
http://www.passlabs.com/pdfs/old product manuals/x0.2_om.pdf (Owner's Manual)
DONG FONG AUDIO: Pass Labs X 0.2 PreAmp ( Used ) (Offer)
2) Monaural integrated Amplifier JVC AX-M9000
HiFi-Do McIntosh/JBL/audio-technica/Jeff Rowland/Accuphase
http://venetor-sound.com/main/AX-M9000-01.jpg
http://venetor-sound.com/main/AX-M9000-02.jpg
VICTOR ƒ‚ƒmƒ‰ƒ‹ƒvƒŠƒ�ƒCƒ“ƒAƒ“ƒvAX-M9000‚ÌŽd—l ƒrƒNƒ^�[
??????????????????AX-M9000??????????????RM-RE9000?
http://av.watch.impress.co.jp/docs/20060914/vic15.jpg
http://www.jvc.de/html/faq/highend/ax-m/2142/AX-M9000Deutsch.pdf (Owner's German)
JVC AX-M9000 Manuals, Support and Troubleshooting - Amps (Owner's english)
JVC AXM9000 Service Manual free download,schematics,datasheets,eeprom bins,pcb,repair info for test equipment and electronics
JVC AX-M9000 SM 2 Service Manual free download, schematics, eeprom, repair info for electronics
The preamp models X02 and XP30 are more consequently aligned to high performance, because the power supply has been extracted along with the operating/VF-display unit (with a lot of devices, which are critical by a close arrangement of the signal path) of the actual pre-amplifier devices.
This wasn't realized by the integrated Amp from JVC.
Who knows additional examples of this very rare genre ??
Attachments
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For this reason it would be a good idea, to replace the presently output stage through a very small power amp stage in your preamplifier for a special integrated amp series (e. g. arround 2-6 watts output power at 8 ohms) for directly connecting of high efficiency speakers (or also even low efficiency and small speakers like ProAc Tablette or Auratone 5C in very small rooms).
The already massive housing envelope is entirely sufficient as a heat sink by this wattages.
In your currently monaural preamp models unfortunately this massive aluminum housing parts are not used as a heat sink.
The already massive housing envelope is entirely sufficient as a heat sink by this wattages.
In your currently monaural preamp models unfortunately this massive aluminum housing parts are not used as a heat sink.
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Hi,
The AMR AM-77 is a Stereo Amplifier, however it can be switched to mono operation and multiple units can be slaved together. So it kind of applies.
In Mono-Mode the solid state output stages of the two channels (it is a hybrid amp) are paralleled up on the inputs (and also outputs too if the single output mode is selected - bi-amping is the other option in which case the outputs remain independent), everything else just uses the left channel's circuitry.
Ciao T
Who knows additional examples of this very rare genre ??
The AMR AM-77 is a Stereo Amplifier, however it can be switched to mono operation and multiple units can be slaved together. So it kind of applies.
In Mono-Mode the solid state output stages of the two channels (it is a hybrid amp) are paralleled up on the inputs (and also outputs too if the single output mode is selected - bi-amping is the other option in which case the outputs remain independent), everything else just uses the left channel's circuitry.
Ciao T
good advice - thank you.
http://www.fastaudio.com/workspace/uploads/downloads/amr-serie-77.pdf
amr ph77
http://www.fastaudio.com/workspace/uploads/downloads/amr-serie-77.pdf
amr ph77
Hi,
Modesty and full disclosure obliges me to point out that the design of these units is to a certain degree by yours truly.
Ciao T
good advice - thank you.
http://www.fastaudio.com/workspace/uploads/downloads/amr-serie-77.pdf
amr ph77
Modesty and full disclosure obliges me to point out that the design of these units is to a certain degree by yours truly.
Ciao T
Which models are this pre- and power amps from YBA ?Knock, Knock !
Who's there ?
It's me, Yves Bernard André.
not mentioned about
YBA Product Overview
Preamplifier : Signature 6 (total of 6 cases) , Signature 4 (4 cases, phono stage built in the L+R preamp boxes)
For each channel of the six box affair : 1 power supply chassis, 1 preamp case, 1 phono box.
(Signature power amp : 1-case stereo version, 2 monaurals, and a 4-box version with 4 x 500VA transformers per channel)
For each channel of the six box affair : 1 power supply chassis, 1 preamp case, 1 phono box.
(Signature power amp : 1-case stereo version, 2 monaurals, and a 4-box version with 4 x 500VA transformers per channel)
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only sissies are having even number of boxes , for stereo preamp
cranked me up on a not so easy day.
For your reading pleasure...
Pass Laboratories XP-30 line preamplifier | Stereophile.com
Congratulations to Wayne, Nelson and PL for another SOTA design!
Pass Laboratories XP-30 line preamplifier | Stereophile.com
Congratulations to Wayne, Nelson and PL for another SOTA design!
Who have heard this dual mono integrated amplifier ?
VICTOR AX-M9000の仕様 ビクター
VICTOR AX-M9000の仕様 ビクター
Some images of X0.2 mono pre-amplifier's in the attachment (I am looking for internal images which I don't find online).
Here an offer from Germany in used condition - very cheap from my view:
https://www.kleinanzeigen.de/s-anzeige/pass-labs-x-0-2-vorstufe/2574765737-172-3291
and a diy clone include the control unit of this model:
https://www.rstaudio.de/vv4-pass-x0-2-nachbau/
Here an offer from Germany in used condition - very cheap from my view:
https://www.kleinanzeigen.de/s-anzeige/pass-labs-x-0-2-vorstufe/2574765737-172-3291
and a diy clone include the control unit of this model:
https://www.rstaudio.de/vv4-pass-x0-2-nachbau/
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Pass Labs X 0.2 front-II.jpg119.2 KB · Views: 34
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Pass Labs X 0.2-rear-IV.jpg162.8 KB · Views: 35
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Pass Labs X 0.2 rear-III.jpg42.6 KB · Views: 32
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Pass Labs X 0.2 rear-II.jpg69.9 KB · Views: 32
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Pass Labs X 0.2 rear.jpg111.9 KB · Views: 35
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Pass Labs X 0.2 sub-d connectors.jpg48.1 KB · Views: 32
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Pass Labs X 0.2 Remote Control.jpg77.7 KB · Views: 31
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Pass-Labs-X-0.2-RC.jpg173.1 KB · Views: 30
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Pass-Labs-X-0.2-quality-Assurance-Certificate.jpg159.7 KB · Views: 26
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Pass Labs X 0.2 Owner's man.+RC.jpg190.4 KB · Views: 33
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Pass Labs X 0.2 front.jpg85.9 KB · Views: 32
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Pass Labs X 0.2 left side.jpg65.6 KB · Views: 35
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YBA Signature - various versions of pre-amplifiers and power supplies (no internal images of screening and closed line modules to find online).
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YBA Signature silver front-PS.jpg59.3 KB · Views: 30
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YBA Signature silver front-II.jpg61.8 KB · Views: 32
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YBA Signature silver RC.jpg42 KB · Views: 26
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YBA Signature black front-RC.jpg43.2 KB · Views: 29
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YBA Signature silver PS.jpg53.2 KB · Views: 32
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YBA Signature black front-PS rear.jpg74 KB · Views: 30
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YBA Signature black front-V.jpg42 KB · Views: 28
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YBA Signature black front-IV.jpg45.9 KB · Views: 29
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YBA Signature black front.jpg63 KB · Views: 28
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YBA Signature black front-I.jpg40.7 KB · Views: 33
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YBA Signature black front-III.jpg33.9 KB · Views: 30
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YBA Signature black front-VI.jpg100.2 KB · Views: 29
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YBA Signature black rear-II.jpg82.3 KB · Views: 26
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YBA Signature black rear-I.jpg77.5 KB · Views: 36
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YBA Signature black front-open.jpg136.1 KB · Views: 36
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YBA Signature PS-IV.jpg135.5 KB · Views: 35
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Hellotiefbassuebertr,
there have been a few companies with dual mono preamps and dual mono poweramps. Also with seperated preamp, PSU,....
One example is 'GRYPHON':
GRYPHON PANDORA:
https://gryphon-audio.dk/the-collection/preamplifiers/pandora/
GRYPHON BELCANTO DUAL MONO LINESTAGE
https://www.audiosciencereview.com/...mono-preamplifier-by-2r-vintage-review.32203/
Cheers
Dirk
there have been a few companies with dual mono preamps and dual mono poweramps. Also with seperated preamp, PSU,....
One example is 'GRYPHON':
GRYPHON PANDORA:
https://gryphon-audio.dk/the-collection/preamplifiers/pandora/
GRYPHON BELCANTO DUAL MONO LINESTAGE
https://www.audiosciencereview.com/...mono-preamplifier-by-2r-vintage-review.32203/
Cheers
Dirk
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