• WANTED: Happy members who like to discuss audio and other topics related to our interest. Desire to learn and share knowledge of science required. There are many reviews of audio hardware and expert members to help answer your questions. Click here to have your audio equipment measured for free!

Gryphon Apex Stereo power amplifier Measurements (Stereophile)

noiseangel

Active Member
Joined
Sep 24, 2020
Messages
296
Likes
463
Location
Perth, Western Australia
I didn't realise you had started this thread. I accidentally started at the same time. USD99k Gryphon V USD400 Purifi.
 

Attachments

  • image_2022_08_18T00_43_35_352Z.png
    image_2022_08_18T00_43_35_352Z.png
    79.3 KB · Views: 461
  • image_2022_08_18T00_42_49_467Z.png
    image_2022_08_18T00_42_49_467Z.png
    895.4 KB · Views: 456

HarmonicTHD

Major Contributor
Forum Donor
Joined
Mar 18, 2022
Messages
3,326
Likes
4,834
Basically another ridiculously overpriced mediocre engineered amp. Especially if compared with Benchmark AHB2 or Purify and many others at a fraction of the price.

The poor IMD and the large differences between the channels and the significant rise in Sinad over about 1W are „remarkable“
 

Mnyb

Major Contributor
Forum Donor
Joined
Aug 14, 2019
Messages
2,735
Likes
3,801
Location
Sweden, Västerås
It’s just crap if the performance vary 16dB between channels, just crap :facepalm::facepalm: even if the otherwise sad performance is not good ( because reasons ) the QC is really bad.

It can even be an cooling issue due to lack of proper feedback ( because reasons ) the channels drift apart due to some thermal differences between channels .
 

HarmonicTHD

Major Contributor
Forum Donor
Joined
Mar 18, 2022
Messages
3,326
Likes
4,834
It’s just crap if the performance vary 16dB between channels, just crap :facepalm::facepalm: even if the otherwise sad performance is not good ( because reasons ) the QC is really bad.

It can even be an cooling issue due to lack of proper feedback ( because reasons ) the channels drift apart due to some thermal differences between channels .
Yes JA gives the unit the benefit of the doubt that it might be faulty. For 99k I not only would expect better overall performance but impeccable QC, like the manufacturer coming to my house in person with an AP and ensure the correct working. Oh wait they most likely don’t even have an AP but sell amps at three times the price of an AP :facepalm:
 

Mnyb

Major Contributor
Forum Donor
Joined
Aug 14, 2019
Messages
2,735
Likes
3,801
Location
Sweden, Västerås
Yes JA gives the unit the benefit of the doubt that it might be faulty. For 99k I not only would expect better overall performance but impeccable QC, like the manufacturer coming to my house in person with an AP and ensure the correct working. Oh wait they most likely don’t even have an AP but sell amps at three times the price of an AP :facepalm:
Hifi should not be cottage industry, every one is handbuilt and "unique" , it works for pottery and cheese and craft beer not for amps :)
 

charleski

Major Contributor
Joined
Dec 15, 2019
Messages
1,098
Likes
2,239
Location
Manchester UK
Presumably, the left channel's higher levels of distortion and noise and its higher output impedance than the right channel's are sample-specific.
So spending $100k doesn’t stop you having to worry about basic QC issues… A bit amusing considering all the moans about problems with cheap Chinese equipment.
 

FeddyLost

Addicted to Fun and Learning
Joined
May 24, 2020
Messages
752
Likes
543
If Gryphon still did not gone bankrupt, then there are lot of target audience.
Nice to hear that.
 

noiseangel

Active Member
Joined
Sep 24, 2020
Messages
296
Likes
463
Location
Perth, Western Australia
If Gryphon still did not gone bankrupt, then there are lot of target audience.
Nice to hear that.
The people who spend 100k on an amplifier spend exactly zero seconds on ASR. They probably can't read or interpret test and measurements either, hence Gryphon keep going selling overpriced hunks of metal like this. The box looks pretty but the measurements are far from pretty. What really pisses me off is JA and MF always make excuses for these overpriced under performing blocks of metal just to keep the advertising revenue up. Like this amplifier maybe faulty or something. No criticism of the fact that a 100k amp may have not been properly tested before leaving the factory. We'll just gloss over that.
 

John Atkinson

Active Member
Industry Insider
Reviewer
Joined
Mar 20, 2020
Messages
168
Likes
1,089
JA gives the unit the benefit of the doubt that it might be faulty.

Something that I don't think is widely appreciated is that samples that are submitted to a magazine for review are often much-traveled, especially in these days of supply chain problems. Before an amplifier or a pair of speakers arrives in the reviewer's listening room. they may well have been used at show, in dealer's showrooms, or even spent time in another reviewer's systems. I think it only fair, therefore, to give an amplifier that has worse measured performance in one channel the other the benefit of the doubt.

And with the Gryphon Apex Stereo, the higher levels of noise and distortion in the left channel compared with the right were still low enough in absolute terms not to give rise to audible problems: https://www.stereophile.com/content/gryphon-apex-stereo-power-amplifier-measurements

John Atkinson
Technical Editor, Stereophile
 

tomita

Member
Joined
Jun 7, 2021
Messages
20
Likes
15
Something that I don't think is widely appreciated is that samples that are submitted to a magazine for review are often much-traveled, especially in these days of supply chain problems. Before an amplifier or a pair of speakers arrives in the reviewer's listening room. they may well have been used at show, in dealer's showrooms, or even spent time in another reviewer's systems. I think it only fair, therefore, to give an amplifier that has worse measured performance in one channel the other the benefit of the doubt.

And with the Gryphon Apex Stereo, the higher levels of noise and distortion in the left channel compared with the right were still low enough in absolute terms not to give rise to audible problems: https://www.stereophile.com/content/gryphon-apex-stereo-power-amplifier-measurements

John Atkinson
Technical Editor, Stereophile
Which would be OK if the price was not 100K. At this price level, those technical problems, albeit not audible, are still unacceptable!
 

Matias

Master Contributor
Forum Donor
Joined
Jan 1, 2019
Messages
5,061
Likes
10,891
Location
São Paulo, Brazil
At that price level the least they could send are factory measurements signed by an employee. Then we would know what was really accepted in quality assurance, and if later it deviates, then sure, blame on the usage elsewhere.

But I agree that someone spending that much on an amplifier couldn't care less about measurements, so....
 

AdamG

Debunking the “Infomercial” hawkers & fabricators
Moderator
Forum Donor
Joined
Jan 3, 2021
Messages
4,709
Likes
15,503
Location
Reality
99k for 2 channels? Or 50k a channel. Wow. It even has sharp spikes to dig holes into your furniture. Spikes on an amp? Or are they Griffon Claws?
 

RammisFrammis

Member
Joined
Mar 27, 2020
Messages
83
Likes
95
Basically another ridiculously overpriced mediocre engineered amp. Especially if compared with Benchmark AHB2 or Purify and many others at a fraction of the price.

The poor IMD and the large differences between the channels and the significant rise in Sinad over about 1W are „remarkable“
It seems well engineered and measures good. It is way overbuilt and too expensive though for what it does and an AHB2 would be better value. I do not think the customers for this amplifier care what we think and they will buy it anyway to go in their McMansions.
 

RammisFrammis

Member
Joined
Mar 27, 2020
Messages
83
Likes
95
Something that I don't think is widely appreciated is that samples that are submitted to a magazine for review are often much-traveled, especially in these days of supply chain problems. Before an amplifier or a pair of speakers arrives in the reviewer's listening room. they may well have been used at show, in dealer's showrooms, or even spent time in another reviewer's systems. I think it only fair, therefore, to give an amplifier that has worse measured performance in one channel the other the benefit of the doubt.

And with the Gryphon Apex Stereo, the higher levels of noise and distortion in the left channel compared with the right were still low enough in absolute terms not to give rise to audible problems: https://www.stereophile.com/content/gryphon-apex-stereo-power-amplifier-measurements

John Atkinson
Technical Editor, Stereophile
At what the amplifier costs I would think that the CEO of the company would supervise a test personally and verify that it operates to specification before it is sent to any reviewer. It comes off like you're making excuses for the company which is not very cool. For this money perfection should be demanded. If Sony can churn out thousands of perfect products at reasonable cost, what is the problem with Gryphon? They're expensive and don't have to play by the rules?
 
Top Bottom