No. That's why it is called A90 'Discrete', as opposed to using monolith amplification chips..How is the amplification OP amps?
I don't think he can (will) since S.M.S.L.s current head/amp products feature an amplification design that is over 99% the exact same as original L30.
I love my DT1990 more than ATH-R70x or DanClark Aeon RT... it's a very fine pair of headphones. You can get rid of their treble spicyness with a passive filter or EQ. And they are nearly indestructible.I'm more confused about the A90D + D90SE with DT1990. Feels like money spend on the wrong end.
i would go with a topping DX5 and spend more money on the headphones
More possible functions can be added and if there is some bug that was unnoticed can be fixed.How is reliability of this thing?
I worry when a pure analogue headphone amp needs firmware updates...
Very happy with my reliable SMSL SP400 (featuring THX AAA-888) with perfect resistor ladder volume control
I love the look and features of this Topping but reliability seems to be thing with their headamps sadly
The amp has features like remote control and mapping volume steps to actual volumes using different curves. The control part of the device is not purely analogue.I worry when a pure analogue headphone amp needs firmware updates...
Indeed. I feel that the DT1990pro is painted way to negative. I like it more than my HD660s. Treble perception is hugely influenced by age and how much abuse your ears have had, e.g. nightlife. Was worried about the treble too but with some slight eq in a few places the treble is more than fine for me.I love my DT1990 more than ATH-R70x or DanClark Aeon RT... it's a very fine pair of headphones. You can get rid of their treble spicyness with a passive filter or EQ. And they are nearly indestructible.
what do you mean by abuse of your ears in nightlife? i'm curiousIndeed. I feel that the DT1990pro is painted way to negative. I like it more than my HD660s. Treble perception is hugely influenced by age and how much abuse your ears have had, e.g. nightlife. Was worried about the treble too but with some slight eq in a few places the treble is more than fine for me.
Hope Amirm will measure and review the 1990 one day.
clubbingwhat do you mean by abuse of your ears in nightlife? i'm curious
Whoops, forgot to post the next comparison; a blind listening test on my son. On two occasions, 2 and 4 days after the original comparison I put a pillow case over the two preamps before my son even arrived. I told him to try and identify which pre I played first based on memory and his notes. He didnt guess correctly either day. On each of those days, after the initial attempt at blindly identify the pre I switched back and forth between the two by changing the wires, causing a 20 second delay or so between each sample. I told him the first two samples are the different pres, but after that it is "random". A,B,A,A,B,B,A,BI finally got around to comparing the A90 D and my schiit freya s. This was as pre amp only, not HP amp though. Listening was not blind, but observations were kept private until end. I level matched(72 db) using a chesky test tone and cell phone app. then used a cd quality chesky recording, node 2i to modius e to pre amps to ATI 542 ncore to ls50.. All balanced. I told my son to listen to tonality of instruments and "image", which I purposely didnt define.
My 21 year old son and I listened to same 30 seconds of music 12 times on the a90d in high gain. It took about 30 seconds to switch cords. Then 12 times on schiit freya s in its active mode. I told him to write down, in short phrases, how the two compared.
we both noted: more bass for a90D, slightly hot treble for Freya, cellos sounded more prominent on a90d, violins on schiit(elevated highs?). schiit wider, bigger image
contradictions: subjectively we preferred different pre amps, I distinctly noticed a smaller more forward image on the a 90d and better and better bass extension. I thought the schiit's image depth was subjectively better, but more diffuse.......my son said he did not really understand my lingo or agree with what i heard. he thought they both sounded good, and not real different in the end.
On tuesday i will cover rack, so it is blind for my son. Same process, but only 6 plays each. by memory and his own written description i will see if he can tell them apart.
I'm pretty sure i wouldn't sell either. I've had no operational problems with a90D, but have not even listened to the headphone amps..........
what do you mean by abuse of your ears in nightlife? i'm curious
Indeed, clubbing, concerts etc..clubbing
Kindly Greeting everyone from ASR!
Does anyone do A/B A90 and A90D with D90SE(LE)?
In particular with DT1990.
Is A90D REALLY have better clarity on mid's and high's than regular A90 when connected to same DAC - D90SE(LE)?
Thanks in advance for YOUR response's!
Yes, definitely is.is this amp a full balanced design? (that is both +/- outputs of 180degrees out-of-phase of each other)
Thanks