SMSL SD-1955

Narayan escribió: Pink si vas por el segundo muy bueno tiene que ser ¿has podido compararlo con algún otro DAC?

Hamilton escribió:El Dac AD 1955 y el DIR900w es, por ejemplo, el DAC que lleva el Ultracurve.
Y ademas este ultimo lleva el SHARK.
No se no se.......

Narayan escribió:Por cierto en la segunda foto el aparato es distinto en el frontal ¿es una versión nueva?

Hamilton escribió:El Dac AD 1955 y el DIR900w es, por ejemplo, el DAC que lleva el Ultracurve.
Y ademas este ultimo lleva el SHARK.

Hamilton escribió:El Dac AD 1955 y el DIR900w es, por ejemplo, el DAC que lleva el Ultracurve.
Y ademas este ultimo lleva el SHARK.
No se no se.......

Azazel escribió:
Rogamos no confundir al personal

thunderdomme escribió:
Es posible que me haga con un jueguetito de éstos para algún equipo secundario, desde luego en combinación por ejemplo con un amplificador tripath debe ser una combinación rompedora!!

Measurement ODAC

Freq. Response 10 hz – 19 Khz 24/44 +/- 0.1 dB A
THD+N 100 hz 0 dBFS 0.0029%
THD+N 20 hz –1 dBFS 0.003% A
THD+N 10 Khz –1 dBFS 0.003% A
IMD CCIF 19/20 Khz –3 dBFS 0.0011% A
IMD SMPTE –1 dBFS 0.0004% A
Noise A-Weighted dBu 24/44 --102.8 dBu A
Dynamic Range –60 dBFS A-Wtd --111.1 dBr A
Linearity Error -90 dBFS 24/44 0.0 dB A
Crosstalk 0 dBFS Line Out 100K --93.5 dB A
USB Jitter 11025 hz J-test 24/44 Excellent
Maximum Output Line Out 100K 2.0 Vrms

Pink Panther escribió:Esta tarde tuve el placer de probar este DAC, tanto en el equipo estéreo como en el equipo de sonido del Mac, y el resultado ha sido completa y absolutamente demoledor el chip 1955 es poco menos que perfecto, que manera de distorsionar sin este Dac

Un 10 sobre 10 para esta joya

kevinkr
diyAudio Moderator

I have an SMSL SD-1955 dac that uses the Tenor TE7022L usb IC, and have had all sorts of problems getting it to work correctly/consistently in 24 bit mode, without drivers it seems mostly to want to run in 16 bit mode. SMSL does not provide any driver support for its products to best of my ability to find such on Google. I did find that the Terralink Asio driver (win 7) will work with this device, and if you change to 24 bit mode in the driver and then restart play it will usually work in 24 bit mode. (The other TE7022L drivers I've found are all specific to the manufacturer that makes them. Source of all of this code is Galaxy Far East Corp,, the maker of the TE7022L) The windows 7 driver itself is quite buggy, and the 7022L is not asynchronous, but isochronous which means there is a significant amount of jitter present in the output. The device may function better in the Linux world, but have not so far tried it. I think you would need to run Alsa and probably force it to default to 96K 24 bit operation. There is some discussion of using this device at higher bit rates/sample depths in Linux in another thread here.

The overall performance of these entry level dacs is probably not going to be stellar.. The SD-1955 is not terribly bad for what I paid for it, but it's pretty mediocre sounding compared to my homebrew PCM1794A/WM8804 based dac driven by a Stello U3.

My suspicion is that you could do far worse than this little SMSL $100 dac, but could also do a lot better if you could build your own or buy a kit around here. The sound at best I would describe as uninvolving and rather lacking in dynamics. I have installed upgraded op-amps (OP2134) which helped. Possibly a better supply would help too, beyond that some fairly significant tweaking would be needed - there is potential, perhaps rehoused in a bigger box to get some room for a really competent analog output stage.

I just had a thought: Check out the TPA (Twisted Pear Audio) stuff here: http://www.twistedpearaudio.com/landing.aspx

Take a look specifically at the OPUS and COD dac pcb kits. Consider one of the XMOS based USB to I2S projects here - purchased piecemeal you might possibly stay under the customs limits. XMOS based solutions are asynchronous, and depending on implementation and coding may support 192K..

maty escribió:
Comparativas auditivas, no numéricas que es lo que demandaba.

maty escribió:
no estoy al tanto de vuestras comilonas ni de a quien te refieres.