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Schiit Syn DAC/Preamp/HP Amp Review

Rate this DAC/Preamp/HP Amp:

  • 1. Poor (headless panther)

    Votes: 2 1.6%
  • 2. Not terrible (postman panther)

    Votes: 28 22.6%
  • 3. Fine (happy panther)

    Votes: 80 64.5%
  • 4. Great (golfing panther)

    Votes: 14 11.3%

  • Total voters
    124

amirm

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This is a review and detailed measurements of the Schiit Syn DAC, pre-amplifier, headphone amp and surround upmixer. It was kindly sent to me by a member and used to cost US $399 before being discontinued.
Schiit Syn preamp DAC stereo surround analog toslink  headphone amp review.jpg

Member sent me this product a year ago but due to some misunderstanding on my part, I am just getting to review it now. :) I did not expect a product introduced in 2023 to be already discontinued but I can see why: few if anyone wants an analog stereo to 5.1 upmixer. There is no reason to not perform proper Dolby Digital 5.1 decoding as a minimum. Fortunately the device also has a DAC, preamp and headphone output which can be very useful. And that is what I focused my testing on.

Here is the back panel and a shot of the bulky AC transformer:
Schiit Syn preamp DAC stereo surround analog toslink  headphone amp back panel review.jpg


Schiit Syn DAC Measurements
Company emphasizes the use of the device with a smart TV using its Toslink output and that is how I tested its digital input. USB should be similar.
Schiit Syn preamp DAC stereo surround analog toslink measurement.png

I must say, this is better than I expected, putting the Syn in "competent" category of all DACs tested:
Best preamp dac schiit review.png

Best preamp dac schiit zoomed review.png


There is some widening of our tone though and I suspect that is due to jitter. Indeed, that is how it turned out:
Schiit Syn preamp DAC stereo surround analog toslink Jitter Distortion audio measurement.png


Noise performance is very good:
Schiit Syn preamp DAC stereo surround analog toslink dynamic range audio measurement.png


But not as good as one would want in this day and age:
Schiit Syn preamp DAC stereo surround analog toslink IMD Distortion audio measurement.png


Likely the analog processing stages, even though turned off, are impacting it. There must also be be some ultrasonic noise:
Schiit Syn preamp DAC stereo surround analog toslink frequency vs thd Distortion audio measure...png


I didn't see the need to run more DAC tests.

Schiit Syn Pre-amplifier Measurements
Let's test RCA input/Output with volume set to max:
Schiit Syn preamp DAC stereo surround analog audio measurement.png

Wow, this is once again better than I expected! Distortion is below threshold of hearing and noise that dominates SINAD, should be plenty for most content.

Frequency response is impressively flat:
Schiit Syn preamp DAC stereo surround analog audio frequency response measurement.png


IMD noise+distortion is excellent as well:
Schiit Syn preamp DAC stereo surround analog audio IMD distortion measurement.png


Channel separation is good:
Schiit Syn preamp DAC stereo surround analog audio crosstalk measurement.png


Wideband noise+distortion is a bit weak but OK for class:
Schiit Syn preamp DAC stereo surround analog audio distortion vs frequency measurement.png


Channel matching is disappointing though with variations due to volume control selected:
Schiit Syn preamp DAC stereo surround analog audio volume channel matching measurement.png


Schiit Syn Headphone Amp Measurements
Let's see how much power we have with 300 ohm load and how clean:
Schiit Syn preamp DAC stereo surround analog audio headphone power 300 ohm measurement.png

Ah, that is disappointing in power department. I like to see minimum of 100 milliwatts and we are shy of that by a factor of seven! Don't expect much volume with high impedance headphones.

32 ohm load though, changes the picture:
Schiit Syn preamp DAC stereo surround analog audio headphone power 32 ohm measurement.png

Even though distortion picks up, it is still reasonable as it delivers nearly half a watt of power.

Conclusions
Schiit Syn delivers a very good (B) DAC, an excellent preamplifier (A-), and OK headphone amplifier (B-) in an integrated package. I wish they would produce it again, minus the silly surround features at slightly lower cost.

Assuming you can find one on used market for less, I am going to recommend the Schiit Syn.

------------
As always, questions, comments, recommendations, etc. are welcome.

Any donations are much appreciated using: https://www.audiosciencereview.com/forum/index.php?threads/how-to-support-audio-science-review.8150/
 
This is a review and detailed measurements of the Schiit Syn DAC, pre-amplifier, headphone amp and surround upmixer
Quite good.
Member sent me this product a year ago but due to some misunderstanding on my part, I am just getting to review it now. :)
Ah well, better late than never... thanks to the member for sending it in and for your testing. :)

Let's have a closer look, albeit a bit blurry;

1766044911229.png


1766045006504.png


1766045049994.png


1766045191021.png


USB Receiver: C-Media CM6635

DAC: ESS ES9018 with LM4562 I/V and filter stages


JSmith
 
Do I have it right that Schiit were doing a kind of scatter gun approach to model launches - bring something out and see if it sinks or swims in the marketplace? If successful, they make fresh batches but if not, it's quietly put to one side?

I can't believe how fussy this site is on performance. It really wasn't long ago that -70dB IMD/THD was regarded as a very good distortion figure and where so-called high end is concerned, the added 'flavour' of -40dB was regarded as a good thing!!! Here, we get iffy over -110 compared to -120dB, both figures totally inaudible - we really have never had it so good :)

I know from his posts that Jason is always trying to take the more challenging route rather than the easy one of seemingly slapping a few chips on a board and calling it quits. It would appear that sometimes, it pays dividends and other times less so. Certainly for US buyers, the brand seems a very safe bet (the UK distributor often runs out of products whenever I've looked). I do wish 'em well though and hope they can go on making interesting and inspired products :)
 
A product that only allows Stereo upmix to 5.1., but no actual 5.1 input, is indeed a strange choice. Few people will have a 5.1 setup only for stereo sources.
 
Not bad. The channel mismatch was the worst imo.
 
A product that only allows Stereo upmix to 5.1., but no actual 5.1 input, is indeed a strange choice. Few people will have a 5.1 setup only for stereo sources.
That's presumably why it's discontinued.
 
Thank you for the review, Amirm.

This device would have been a great basis for a simple but effective 6 channels DAC/preamplifier for multichannel music fans (there are many, including myself, among the classical music lovers and even other musical genres), but sadly, pure audio multichannel devices are very rare beasts.

The ESS9018 DAC is already multichannel capable and can perform volume control, if required. Replace the optical input with USB or HDMI to be able to receive discrete digital multichannel formats, redesign the output stage and your are almost done.

In the description of this device on Schiit's European website, it is written that "Jason and Mike, the founders of Schiit, have been involved with surround for almost 30 years."

Well, gentlemen, let's prove your dedication to multichannel audio, please! :)
 
While not my cup of tea, performance is more than acceptable, and for $400, a no brainer for Classical music fans, etc. not too shabby at all!
 
Thank you for the review, Amirm.

This device would have been a great basis for a simple but effective 6 channels DAC/preamplifier for multichannel music fans (there are many, including myself, among the classical music lovers and even other musical genres), but sadly, pure audio multichannel devices are very rare beasts.

The ESS9018 DAC is already multichannel capable and can perform volume control, if required. Replace the optical input with USB or HDMI to be able to receive discrete digital multichannel formats, redesign the output stage and your are almost done.

In the description of this device on Schiit's European website, it is written that "Jason and Mike, the founders of Schiit, have been involved with surround for almost 30 years."

Well, gentlemen, let's prove your dedication to multichannel audio, please! :)
I believe they did back in the Theta days...
 
Do I have it right that Schiit were doing a kind of scatter gun approach to model launches - bring something out and see if it sinks or swims in the marketplace? If successful, they make fresh batches but if not, it's quietly put to one side?
I remember reading about this (or something similar) a couple of years ago, and I think it was explained as an R&D/experiment type product. If you consider the context of 2022 with covid supply chain dramas, perhaps they thought "no point designing our next real products when we don't even know what we can use in them, so lets' just do something wacky with some basic electronics"...?
 
I viewed the remote control and headphone output as making the Syn a relatively inexpensive stereo preamp within the universe of Schiit Audio products - irrespective of a use for surround sound.

When the Syn was discontinued, I realized the reduction in list price from $399 to $299 was Schiit's way of quietly closing out a product.

I appreciate Amir revealing the headphone output at 300 ohms impedance reached 13 milliwatts and the channel imbalance relative to the volume control position for the sample he measured.

Thank you to the ASR member who submitted the Schiit Syn and for their patience.
 
Wish this was still available. Trying to find a preamp/DAC with analog inputs for a secondary system. Tough out there.
 
Let's see how much power we have with 300 ohm load and how clean:
[...]
32 ohm load though, changes the picture:
If my math isn't wrong:
13 mW @ 300 Ohm -> 1.97 Vrms
479 mW @ 32 Ohm -> 3.92 Vrms
Shouldn't that be impossible? I've never seen an amplifier than can output a higher voltage at a lower impedance load and don't understand how that would work.
 
If it up-mixes a stereo signal to 5.1, Can it be used as a Pre-amp/line out for 5 Integrated/power amps?
 
If it up-mixes a stereo signal to 5.1, Can it be used as a Pre-amp/line out for 5 Integrated/power amps?
Yes.
In fact I did give it a try and it worked absolutely good.
But then why would you (talking about myself) do such a thing for 400$ when there are plenty budget options for AVR with Dolby/DTS decoding.
 
This is a review and detailed measurements of the Schiit Syn DAC, pre-amplifier, headphone amp and surround upmixer. It was kindly sent to me by a member and used to cost US $399 before being discontinued.
View attachment 498049
Member sent me this product a year ago but due to some misunderstanding on my part, I am just getting to review it now. :) I did not expect a product introduced in 2023 to be already discontinued but I can see why: few if anyone wants an analog stereo to 5.1 upmixer. There is no reason to not perform proper Dolby Digital 5.1 decoding as a minimum. Fortunately the device also has a DAC, preamp and headphone output which can be very useful. And that is what I focused my testing on.

Here is the back panel and a shot of the bulky AC transformer:
View attachment 498050

Schiit Syn DAC Measurements
Company emphasizes the use of the device with a smart TV using its Toslink output and that is how I tested its digital input. USB should be similar.
View attachment 498051
I must say, this is better than I expected, putting the Syn in "competent" category of all DACs tested:
View attachment 498052
View attachment 498054

There is some widening of our tone though and I suspect that is due to jitter. Indeed, that is how it turned out:
View attachment 498055

Noise performance is very good:
View attachment 498058

But not as good as one would want in this day and age:
View attachment 498059

Likely the analog processing stages, even though turned off, are impacting it. There must also be be some ultrasonic noise:
View attachment 498060

I didn't see the need to run more DAC tests.

Schiit Syn Pre-amplifier Measurements
Let's test RCA input/Output with volume set to max:
View attachment 498061
Wow, this is once again better than I expected! Distortion is below threshold of hearing and noise that dominates SINAD, should be plenty for most content.

Frequency response is impressively flat:
View attachment 498062

IMD noise+distortion is excellent as well:
View attachment 498063

Channel separation is good:
View attachment 498065

Wideband noise+distortion is a bit weak but OK for class:
View attachment 498066

Channel matching is disappointing though with variations due to volume control selected:
View attachment 498067

Schiit Syn Headphone Amp Measurements
Let's see how much power we have with 300 ohm load and how clean:
View attachment 498068
Ah, that is disappointing in power department. I like to see minimum of 100 milliwatts and we are shy of that by a factor of seven! Don't expect much volume with high impedance headphones.

32 ohm load though, changes the picture:
View attachment 498069
Even though distortion picks up, it is still reasonable as it delivers nearly half a watt of power.

Conclusions
Schiit Syn delivers a very good (B) DAC, an excellent preamplifier (A-), and OK headphone amplifier (B-) in an integrated package. I wish they would produce it again, minus the silly surround features at slightly lower cost.

Assuming you can find one on used market for less, I am going to recommend the Schiit Syn.

------------
As always, questions, comments, recommendations, etc. are welcome.

Any donations are much appreciated using: https://www.audiosciencereview.com/forum/index.php?threads/how-to-support-audio-science-review.8150/
Thank you @amirm

I guess they were just about a decade (or two) late with such a product.
 
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