Absolute top tier DAC for standard res Redbook CD

+1 with Ctsooner, that is the way to build an audio room, all Natural!, no over kill and unnecessary room treatment's that cost alot of money, I have seen $100,000.00 treated rooms that did nothing for me, the spectral, MIT, Avalon, licensed room at Progressive Audio in Columbus, Ohio in the mid 90s.

Paul,

There is a firmware release for DoP64 support, as well as ALAC. Link here: QA660 DoP and ALAC support

There are just two SDT-M prototypes at the moment, but more are on the way soon. Will let you know the details as we progress.

The SDT-M is a SD card Digital Transport intended to work with our D/A converters. It uses a I2S-like connection, but not PCM. It is all DSD for both PCM formats (converted to DSD64, double DSD128 or quadruple DSD256 on request) and native DSD files up to DSD512.

Of course, if you have a DAC supporting such rates and input you can use it too. Pinout of the 10-pin RJ-50 jack will be disclosed for a referene. For those who like to use it with up to 192k PCM only, there is always the good old S/PDIF output also available. :-)

Best,
Alex Peychev
APL Hi-Fi

Yes, double rock with Green Visco-Elastic glue spread thin in between. Glueing rock to studs as well. I was planning on staggering seams. I like the idea of flipping the rock 90 degrees.

I plan on treating corners with bass traps, 1st reflections with duffusion, and front and rear center walls with a combo of diffusion and absorption to reduce slap echo. Gonna float a "cloud" of diffusers on the ceiling in first reflection but need to establish seating and speaker location first. The first reflection diffusors need to be 4-6" deep and horizontal diffusors only. Front and rear to be shallow diffusors in both the vertical and horizontal plane.

My room has absolutely no furniture or cabinetry besides the listening chair and my rack, and speakers obviously. The rack will be located just to my right on the adjacent wall and a scotch behind to avoid any interference with primary or secondary reflections.

Alex, that's a cool product.

Thanks Al. I was looking in the 2014 buyers guide. I guess I don't get that with my subscription...

Steve N.
Empirical Audio

Matt - another thing I did in my listening room was stagger the footings and support pony walls under the floor, so the floor was not supported in the middle, causing a second harmonic in the floor.

Also, I used two layers of 3/4" MDF on the floor, glued together, staggered and screwed down, much like the walls of a speaker. It has thick carpet over it. The walls of the room are also sound-proofed to some extent. One has plywood under the sheetrock.

Steve N.
Empirical Audio