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What electronic audio products you want tested most

What electronics audio product you like to see tested more

  • Power and Integrated Amplifiers

    Votes: 242 60.8%
  • Headphone Amplifiers

    Votes: 70 17.6%
  • Home Theater AVRs

    Votes: 119 29.9%
  • Home Theater Processors

    Votes: 81 20.4%
  • DACs

    Votes: 126 31.7%
  • Streamers

    Votes: 98 24.6%
  • Combo DAC and Headphone Amplifiers

    Votes: 95 23.9%
  • Phono preamp

    Votes: 37 9.3%
  • DSP (digital signal processors)

    Votes: 145 36.4%
  • Vintage audio products

    Votes: 96 24.1%

  • Total voters
    398

BsdKurt

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Feb 22, 2020
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Location
NYC Suburb
After reading the review of the Denon AVR-X3500H and seeing how the DAC measurements at 1 volt are pretty good, I’d love to see how some of the Parasound Halo amps perform. They all have 1 volt input sensitivity, which should make them a good match for taking some channels off the AVR. Specifically, I’d be interested in the:

Parasound Halo A23+ 2 channel amp
Parasound Halo A52+ 5 channel amp
Parasound Halo HINT 6 2 channel integrated amp with HT bypass

For class A/AB they are not insanely expensive and are supposed to sound great. The idea being buy a inexpensive ish AVR like the Dennon X3500H whenever the video tech requires an upgrade and keep the Parasound long term.
 
Last edited:
Joined
Mar 2, 2020
Messages
11
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3
Some desktop PC motherboards (budget, gaming, etc.) and laptops (budget, gaming, business, etc.) to serve as comparisons against external DAC's and headphone amps. Maybe a few turntables and cartridges to serve as comparisons against (very) cheap DAC's :)
 

Karu

Member
Forum Donor
Joined
Dec 23, 2019
Messages
52
Likes
38
I would like to see the streaming input (ethernet) tested on the various DAC/preamp products such as the Matrix Elment I; miniDSP SHD. Because they measure well on the standard input but then I saw a comment that e.g. the matrix i may have issues if streamed via Ethernet... I am looking to reduce my box count but as ethernet in would be my main use case, I am in doubt of the performance I would get.
 

Lavawood

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Joined
Feb 27, 2020
Messages
68
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80
If I missed it, please point me in the right direction. What is the best way to get a clean USB signal from a pc. Is there a guide for those motherboard/pci/sound cards that do this well?

I believe my USB out is good, but I can’t measure it as far as I know. It’s silent now. I use a PCI card just for USB. I paid $400, can it be done for $150?

I grew up using the crappy line level outs of sound cards. Now, USB has been noisier than I knew it could be.

Is OCXO beneficial on the pc side or the dac side? Never both, right? Which clock is better? OCXO, TCXO, Femto, how many picoseconds does it take ?

are there DACs that can take whatever usb you feed it and clean it up reliably? This is one instance where noise is easily identified, costly to eliminate.
 
Joined
Dec 2, 2018
Messages
31
Likes
5
What about checking some of the most popular amplifier modules available on the various DIY forums and websites ?
I've build quite some of them myself, basic measurements look fine, I'm sure there are quite some around .....
 

amadeuswus

Active Member
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Joined
Jul 8, 2019
Messages
105
Likes
88
Location
Massachusetts
I would like to see some Quad classics measured, a rebuilt 303 or 405-2 for example.
Hear, hear...
Specifications vary, but these figures for the Quad 306 power amplifier look pretty competitive even today:

http://www.hi-fi-insight.com/quad-306-power-amplifier.html
(There may be some perceived bass warmth, however, from the limited bass bandwidth apparently causing phase shifts.)

Specifications for the Quad 303:
https://www.petervis.com/gallery/Vintage Advertisements/quad/quad-303-spec.html
 
Joined
Jan 20, 2020
Messages
11
Likes
16
Dear Amir!
If possible...would love to see your review of any product from Gryphon Audio.
https://gryphon-audio.dk/
That´s some really expensive stuff in my country...with glorious reviews anywhere...
Also...they look great too...
...
Will The Mighty Gryphon survive a ASR review?
That will be cool! :cool:

MEPHISTO_AMP_NY_SQ.jpg MEPHISTO_INSIDE.jpg ESSENCE_PRE_FRIT_BAGFRA.jpg 2-2.jpg 1-1-1-1.jpg
 

Lbstyling

Active Member
Forum Donor
Joined
Jan 2, 2019
Messages
132
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88
After reading the review of the Denon AVR-X3500H and seeing how the DAC measurements at 1 volt are pretty good, I’d love to see how some of the Parasound Halo amps perform. They all have 1 volt input sensitivity, which should make them a good match for taking some channels off the AVR. Specifically, I’d be interested in the:

Parasound Halo A23+ 2 channel amp
Parasound Halo A52+ 5 channel amp
Parasound Halo HINT 6 2 channel integrated amp with HT bypass

For class A/AB they are not insanely expensive and are supposed to sound great. The idea being buy a inexpensive ish AVR like the Dennon X3500H whenever the video tech requires an upgrade and keep the Parasound long term.
I had a Parasound A51 and a Jc1. despite the massive shield on the transformers, they both had considerable mains hum on mine. tons of power though.
 

Kal Rubinson

Major Contributor
Industry Insider
Joined
Mar 23, 2016
Messages
1,807
Likes
2,179
Location
NYC/CT
I had a Parasound A51 and a Jc1. despite the massive shield on the transformers, they both had considerable mains hum on mine. tons of power though.
I've used several (less expensive) Parasounds and never had any hum issues.
A31
A52+
A21+
P7
and probably a couple of others.
 

direstraitsfan98

Addicted to Fun and Learning
Forum Donor
Joined
Oct 1, 2018
Messages
631
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755
Dear Amir!
If possible...would love to see your review of any product from Gryphon Audio.
https://gryphon-audio.dk/
That´s some really expensive stuff in my country...with glorious reviews anywhere...
Also...they look great too...
...
Will The Mighty Gryphon survive a ASR review?
That will be cool! :cool:

View attachment 53818 View attachment 53819 View attachment 53820 View attachment 53821 View attachment 53822
Based on some of the measurements taken on other sites https://www.soundstagenetwork.com/i...ac&catid=97:amplifier-measurements&Itemid=154

I really don't think Gryphon amps are going to measure good on the workbench. As you know, Amir's equipment reviews focus mostly on the measurements. I think the Gryphon amps are really good though, I don't know of many other class AB amps using zero feedback, and the distortion is, admittedly, very low for a zero feedback design. It's perhaps these amps often get described as being so good sounding, despite not being anything special on paper.
 

Wes

Major Contributor
Joined
Dec 5, 2019
Messages
1,005
Likes
814
If I missed it, please point me in the right direction. What is the best way to get a clean USB signal from a pc. Is there a guide for those motherboard/pci/sound cards that do this well?

I believe my USB out is good, but I can’t measure it as far as I know. It’s silent now. I use a PCI card just for USB. I paid $400, can it be done for $150?

I grew up using the crappy line level outs of sound cards. Now, USB has been noisier than I knew it could be.

Is OCXO beneficial on the pc side or the dac side? Never both, right? Which clock is better? OCXO, TCXO, Femto, how many picoseconds does it take ?

are there DACs that can take whatever usb you feed it and clean it up reliably? This is one instance where noise is easily identified, costly to eliminate.
Don't worry about it.

The clock in your DAC is the one to use.

Few modern DACs have any problems with noise.

Buy better speakers & room tmts.
 
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