Because JBL was kind enough to request advertising this month. And, to be clear, each video costs about $3000 for reviewing, shooting and editing. TH-cam revenue is about $30 per video. So, embedded advertising is about the only way to bridge the gap.
I skipped the advertizement, though I managed to grab half a second or so of a couple of women sitting on a couch, seeming to know what they were speaking of.
Dynamic Class A my foot. This seems to be a typical Class AB amp. The idea of Class AB is exactly to avoid switching distortion by biasing the output devices with a smallish current so they stay on even when they are not utilized. Otherwise the amp would be classed as Class B. Dynamic Class A is just pure marketing speak. I expect a reviewer to be able to distinguish these basic things and not just parrot manufacturer's marketing material.
Amplifier classes are a somewhat confusing subject as you suggest. However, we will say that 'dynamic class A' may use techniques as described in Nelson Pass's 1976-US Patent 3995228: Active bias circuit for operating push-pull amplifiers in class-A mode. Pass's patent describes what can be called "sliding bias," where the bias on the output devices varies with the signal to prevent them from shutting off, thereby avoiding crossover distortion. This approach was used in several Threshold amps. Pass said in a Stereophile interview: "I modulated the bias to stretch the bend in the operating curve. Technically, this kept it operating in class-A, but at a lower bias level." That is, sliding bias reduced the heat problem of class A, but as in most engineering, introduced other issues. Levinson used a related approach a few decades later, with a big effort to address real world issues of what they subsequently called 'adaptive bias'. Again, execution details, which we generally can't know, are often the biggest factor in the sonic success, indifference or failure of these designs. So, for the most part, we listen.
@@TheTASmagazineEnd of the day, that’s what really matters and yes, you said it right. For the most part, we listen. And oh ya, listen I did. Paired the Nuevo to Phonar P6 and biwired it too. It was just sonic bliss. I was immediately sold. And this is coming from someone who use Hegel H90 as the daily drive amp paired to LS50 meta
@@TheTASmagazine Imo that is NOT what can be surmised from the company literature you reproduced here. Switching distortion is avoided just by a standard Class AB configuration. Techniques such as described in NP's patent strive to reduce other distortions inherent in Class B operation (which, btw, have become much less of an issue with modern output devices). Lacking any evidence to support it, I choose to believe your comment above is unfounded and arbitrary. If you do have any evidence (or even just a manufacturer's reference to this technique) that Unison Research marketing speak really refers to something similar to what is described in NP's patent, please share it with us.
Aaron, I really enjoyed this review! Thanks for sharing your insights.
Iown it and it is a very accurate review. Super smooth yet neutral without being too analytical.
Aaron - very nice review. If I were a beginning, Audio File, I would consider the product you just reviewed.
What kind of Audio File would you be?
.wav? .flac? .m4p?
Nice review. Thanks for sharing.
Well done!
This amp has always intrigued me. Does it have to be played loud even with high efficiency speakers?
You compared it yo another amp.well done. True commitment.😊
Great review!
+3k and some tube rolling there you go . Given the width and breath of 12ax7s what this unit can sound like is fluid . A good review none the less.
So which hybrid amp for low level music listening is better?
Flowery words for a
underpowered amp 😮
Why is there a JBL ad embedded in the video?
Because they got money for it! And make no mistake- they get paid for reviewing the Unico too.
Because JBL was kind enough to request advertising this month. And, to be clear, each video costs about $3000 for reviewing, shooting and editing. TH-cam revenue is about $30 per video. So, embedded advertising is about the only way to bridge the gap.
We do not, ever, accept payment as a condition for reviews. We do invite advertising as explained elsewhere.
I skipped the advertizement, though I managed to grab half a second or so of a couple of women sitting on a couch, seeming to know what they were speaking of.
@@TheTASmagazine Wow. Only $30. That's hardly worth the effort unless you can sell subscriptions and ads to compensate.
Dynamic Class A my foot. This seems to be a typical Class AB amp. The idea of Class AB is exactly to avoid switching distortion by biasing the output devices with a smallish current so they stay on even when they are not utilized. Otherwise the amp would be classed as Class B. Dynamic Class A is just pure marketing speak. I expect a reviewer to be able to distinguish these basic things and not just parrot manufacturer's marketing material.
I see this alot😂its a class ab amp.😊
Amplifier classes are a somewhat confusing subject as you suggest. However, we will say that 'dynamic class A' may use techniques as described in Nelson Pass's 1976-US Patent 3995228: Active bias circuit for operating push-pull amplifiers in class-A mode. Pass's patent describes what can be called "sliding bias," where the bias on the output devices varies with the signal to prevent them from shutting off, thereby avoiding crossover distortion. This approach was used in several Threshold amps. Pass said in a Stereophile interview: "I modulated the bias to stretch the bend in the operating curve. Technically, this kept it operating in class-A, but at a lower bias level." That is, sliding bias reduced the heat problem of class A, but as in most engineering, introduced other issues. Levinson used a related approach a few decades later, with a big effort to address real world issues of what they subsequently called 'adaptive bias'. Again, execution details, which we generally can't know, are often the biggest factor in the sonic success, indifference or failure of these designs. So, for the most part, we listen.
@@TheTASmagazineEnd of the day, that’s what really matters and yes, you said it right. For the most part, we listen. And oh ya, listen I did. Paired the Nuevo to Phonar P6 and biwired it too. It was just sonic bliss. I was immediately sold. And this is coming from someone who use Hegel H90 as the daily drive amp paired to LS50 meta
@@TheTASmagazine Imo that is NOT what can be surmised from the company literature you reproduced here. Switching distortion is avoided just by a standard Class AB configuration. Techniques such as described in NP's patent strive to reduce other distortions inherent in Class B operation (which, btw, have become much less of an issue with modern output devices). Lacking any evidence to support it, I choose to believe your comment above is unfounded and arbitrary. If you do have any evidence (or even just a manufacturer's reference to this technique) that Unison Research marketing speak really refers to something similar to what is described in NP's patent, please share it with us.
In class A/B the transistors do not turn off. That’s class B.
Gee we are not idiots.intelligent audiofiles know the diff between a and ab.
5:05 I was surprised to learn that humans still listen to Regina Spektor.
😊 just love it.
I don't understand designing a $3,000 integrated amp that has to be opened up to change jumpers.
I have a Due and enjoy it. You might speak slower, let your points sink in with the listener, Sounds like you are rushing to jam it all in.
5000 k ? I buy monitor amplified professional as Neumann. psi. Focal. Adams..Dynaudio....😊😊
Holy Shit ..the new JBL commercial was on this video ….a complete mess and embarrassment in regards to this video
@@carminedesanto6746 Just to help us understand, what is your objection? Thanks.
Get. To. The. Point