M-Audio Fast Track Pro vs Ultra

according to Jim Roseberry the ultra has faster drivers.

Hi Jim

My FireFace UC gives me  4.9ms RTL measured with CEntrance  3.7 under Windows 7 X64 @ 24 / 44.1k

I gather you are getting 4.3ms with your BabyFace ( ? )

- are you running Wind 7 X64 ?

- measuring with CEntrance 3.7 ?

Given the BF and UC both have the same Safety Buffer  [ 32 Samples ]  any idea why the BF is  0.3ms better each way / 0.6ms total ?

I know I'm " splitting hairs "  but at such low latencies, a differnerce of   0.6ms in total is actually very significant - ie: a full %12 quicker overall.

Maybe  it has something to do with the different converters used - the UC uses the AKM 4620 Codec and the BF uses the AKM 5385 AD and TI PCM4104 DA ?

Any tricks / particular settings you are using Jim ?

All the best,
Tom

I have a Fastrack Ultra 8R and a Focusrite Saffire Pro 40.  I bought the 8R after the Saffire Pro 40 died and I though it was going to be a pricey repair ($400 est and I only paid $425 new) but fortunately I was able to repair it relatively cheap.  The Ultra 8R has much lower latency but the Saffire Pro 40 has better preamps that the 8R and thus my primary unit.  The Saffire Pro 40 does not "color" what is input where the 8R does slighly change the signal (e.g. a guitar input will be slightly more on the treble side when recorded through the 8R).  When you are working with "clean" guitar signals or a vocal it's obvious, if you were working with a "distorted" guitar it wouldn't be noticed.

Of them had a little more bandwidth but they still taste I squeezed a little seemed to. Id use them if I absolutely had to, but I will reach the first first.The two XLR / TRS combo jacks, which means you are either a mic or a plug-in.