PS Audio PWT - cd transport


Category: Digital

When I first saw a picture of the PS Audio PWT transport I did not think too kindly of it, as it appeared to be formed plastic but with reading the PS Audio website info on it, it made good electronic sense to me.

Reading the disc via a ‘read till right’ program – in other words, it does not automatically implement ‘error code correction’ (ecc) programming when misreading a disc, instead it reads and rereads the disc up to 100 times (not utilizing the drive cache) before resorting to ecc. Once this data is extracted from the disc it is sent to RAM memory where it is stored for a brief period. This middle storage point separates the disc from the transport’s output, thereby allowing for rereading till right data (explained above) and eliminates timing errors (by reclocking the data from this point forward, instead of using the clocked data stream directly read from the disc). This memory buffer does not manipulate or change the disc data at all – it’s still what was on the disc, only now more accurate in content and more accurate in timing. This is the data output.

Anyway, after being explained this info by Paul McGowan and Ryan Conway, I was intrigued enough to buy one. First off, I can say that I pleasantly surprised and happy to report that the transport is not made of plastic, its either aluminum or steel, and it is heavy and well damped. But, the remote is made of plastic and is pretty cheap feeling – oh well. There is no buttons on the unit, all input is either via remote or via a touch screen on the unit. The touch screen is a nice touch (couldn’t resist;) – it allows for operation but also displays disc title and song name with album cover art (if the unit is connected to your internet).

But enough with the side show stuff – what does it sound like? House keeping first - I have about 348 hours on it now, it sets ontop of Symposium Rollerblocks,, I’m using a Grover Huffman Sc AES/EBU digital line to my custom Audio Note DAC, and I’m using an Grover Huffman Sx power cable. The rest of my system consists of Atma-Sphere MP-3 pre and MA-1 amps and Quad 988 esl’s. This consists of the base line and comparisions are made against a Accustic Arts Drive 1 mk1 transport.

Now then;

Most obvious is a total lack of digititis – no etching, no “over emphasized” sharp edges, no glare. Instead, you get a VERY organic sound, but mind you, it’s not bloated, softened, or rounded – the best description is ‘natural’. Significantly more liquid than the Accustic Arts.

A dramatic increase in soundstage and dimensionality. Instruments are spread out with plenty of air and space around them. Open air, breath. Whole stage depth presented. Much more extension in my sound stage width, now uncannily extends beyond the sidewalls.

Articulate and detailed, but again no etch or glare. Fast. Slam. Tight. Rhythmic. We have moved beyond toe-tappin’ and have entered the butt shakin’ realm. Very lively. No fatigue.

All is well extended in both directions, bottom to top. Nothing is bloated or sharp. – sonically very clear and focused. Micro and macro detail is really expressed nicely. But, the noise floor is bit higher than the Accustic Arts – not a totally “black” background. Lastly, on very busy passages, I detect a bit of grain – only on pieces very busy with treble (concurrent multi cymbals, highhat, triangles, +).

Putting it all together - Horns, bongos, vibes are holographic / 3 dimensional. Brass horns are “brassy” but not bright or shrill, instead mellow and sexy. Cymbals are crisp and have realistic brassy lingering overtones. Toms and snare are stout. Strings are beautiful and radiate mellow woodtones. While bass is deep and distinguishingly tonefull. Woodwinds are richfully hollow and resonate, Voices are lively, relaxed, and human. Again, my notes continuously go back to “organic” and “natural”. Very ‘smile on your face’!!!

Overall, I find myself really amazed. The PS Audio is literally 1/3rd the price of my Accustic Arts but is truly much more musical. Personally, I think it’s power supply could be cleaner but this does not distract from the organic sounds elicited – actually reminds me of good analogue. The PS Audio is without a doubt a giant-killer for its price-point and I feel I can recommend it without hesitance.

I am wonderfully happy with how well it has synergized and complimented my custom Audio Note DAC. Lastly, I should note, the PS Audio has read every disc I have placed in it without a single stoppage -- can't say that with Phillip's drive based transports.
128x128grateful

Showing 10 responses by lowrider57

Thanks Charles. I've emailed PS Audio, but wanted to see what owners have to say.
Since it's factory refurbished, I'm wondering if caps were replaced and it needs some burn-in time.
My DAC is the entry-level PS Audio (not at the level of the Yamamoto), but my baseline with the ARC transport provided open and transparent sonics. Like you, I seek a natural, organic sound.
Thanks for your comments.
I'm pleased to see this thread resurrected. I purchased a factory refurbished PWT and it looks brand new, but I have a question regarding it's performance.
I have ordered an Audioquest HDMI cable, but until it arrives I am using an Oyaide coax cable running to my PS Nuwave DSD DAC. The PWT sounds veiled (lacking transparency) with poor bass extension. It reproduces a good separation of instruments and detail, a wide soundstage, but pales in comparison to my ARC CDP as the transport. The ARC is much more dynamic, has 3D imaging, and sounds more realistic, although some CD's have a digital edge to them.

I let the PWT run-in with a test disk for 24 hours, but the sonics I'm hearing are similar to new tubes that have not been fully burned-in. Is this because I'm not using the I2S connection or some other reason?
Any feedback from PWT owners would be appreciated.
@charles1dad
Charles, I can now safely say that the PWT combined with the PS NuWave DAC is providing me with outstanding digital. "Exceptionally open, resolved, transparent but best of all very natural sound"... I copied your statement since it now applies to me.

BTW, did you replace the fuses in your unit with SR?
Thanks.
Hi Al. We’re so lucky to have you here as a consultant. Using a cheater plug has resulted in clarity and low-end extension in my music. Thank you.

If you recall, you diagnosed a ground-loop in my system whereby the ARC CDP (using unbalanced) had a harshness to it and a Jensen Isomax was the solution. After buying a Brick Wall conditioner, the CDP seemed to be unaffected by grounding conditions and has sounded terrific. It’s interesting that placing the PS Audio in the same position as the ARC has resulted in noise from a ground loop.

Do you think I will need the cheater plug when using HDMI from transport to DAC?
Thanks, Jim


I believe a fuse has blown in my PWT. Since I have to open up the unit, has anybody tried audiophile type fuses in their PWT?
Hi Toolbox,
  I didn't try to change the fuse. Reason being it's a real pain in the ass. There are instructions on the PS Audio forum, it involves popping the top cover, unhooking a ribbon cable, wearing a grounding-strap, then accessing 2 fuses.

I did have my unit serviced under warranty and fuses were replaced and an upgraded transport was installed, also new firmware. It works so well now with the upgrade, that I'm happy with it.
Well done, Toolbox. I agree with you regarding the sound with the stock fuses. I have found that different power cords have an effect on sonics, and also on the DAC.
Are you using the I2S connection and if so, what cable?
Toolbox, did you buy the PWT new, refurbished, or used?
 If you are planning to change the drive, you will likely void the warranty. My PWT is a refurbished unit and the transport was loud and often would not eject. I had the transport/drive replaced under warranty, and it is clearly an upgraded device. It is faster, better quality (but still plastic) and quieter. The only sound I hear is a low-level "whine" when the drive is reading the disk.
@toolbox, that's very interesting about your distortion issue. Was everything fine before you added the PWD? Are you running the latest firmware version?
I have found the PS Audio forum to be of great help troubleshooting problems, also some very nice dudes there.

I'm using the PWT with the Nuwave DSD DAC via I2S, which sounds very nice, but I experience distortion on loud peaks. It's not due to jitter since a string quartet can sound relaxed and realistic, but a symphonic crescendo or loud R&R peaks will sound distorted.
I was assured that the transport would not cause this, so I'm replacing the DAC.

The service by PSA was very fast and was treated with real professionalism. The new transport works nicely.