As usual, I’ve been spending way too much time at this computer today. I did manage to break free for a couple of Frisbee sessions at the part down the street with Charlie. He’s had quite a day with an early morning 4-mile run and follow up Frisbee session and two additional times this afternoon. He’s likely to get a bike ride around the neighborhood if I get home in time.
I’ve been trying to polish up the rapidly approaching Kickstarter Campaign. I spent yesterday creating the 30″ video that is now on the Music and Audio landing page. You can check it out by clicking here. Any feedback is greatly appreciated. Believe it or not it took the better part of a day to produce just 30 seconds.
Tomorrow Russ brings his friend’s REGEN box, his Benchmark DAC2 and a few other cables and such. I’ve invited a few LA and OC Audio Society friends to come and participate in the evaluation of the device. I should say right out front that there is nothing scientific or publishable about what we’re going to do tomorrow. This is meant to be a casual check of several basic things. For those that have been writing saying that the test is meaningless, think what you want.
Here’s how I see things going. We’ll have a single Mac Laptop playing one of my high-resolution 96 kHz/24-bit tunes in stereo. I would prefer to use Amarra because I believe it does the best at playing back the digital information. I have listened to JRiver, Audioirvana, iTunes, and Amarra and Amarra comes out sounding the closest to what I know my tracks sound like.
The USB outputs from the Mac will be sent via a couple of good USB cables to the two Benchmark DAC2s for decoding. We’ll do it first without the REGEN box in between the Mac and the Benchmark. The analog outputs will be sent to the A|X Box that Russ has and then to a Butler Amplifier into two of my B&W 801 Matrix III speakers. These are the speakers that I’ve owned for years. I would prefer to use HRA speakers but I can’t afford to purchase 5 of the JBL M2s.
We’ll listen to this setup and compare the sound. As you would expect, there shouldn’t be any differences. We’ll carefully level match the two devices (I have an SPL meter and I believe there is CAL setting on the Benchmarks). Then we’ll put the REGEN box in between one of the two setups. And do some additional listening. There’s no time pressure…the people here will have plenty of time to make there choices.
I’m going to capture the output of the Mac with and without the REGEN and do a polarity reverse in one file. I’m going to see if they null each other. If they do, it will show that the digital data coming from the REGEN and straight from the computer are identical. For me, that’s proof enough that the DAC will produce the exact same analog output signal. We’ll see.