Since Massdrop has no respect for intellectual property, I won't be buying anything in the future from them. I am probably not alone. Stuff like this hurts innovation and people taking chances on new designs.

Thermal equilibrium happens much faster than he thinks. No need to leave it on 24/7. Warm it up. Sure. As a mechanical engineer in the electronics industry who does thermal simulations, I find a lot of this laughable. Save your electric bill. And caps.

1250 ohm output impedance seems absurd for such a respected design. Typo?

I have one. I have the PCM1704K, AD1865, and TDA1541A (subbed a single crown S1 chip after the fact). Let's just say this thing is epic. The win on the 3 chips with redbook may be the AD chip. But gnat's hairs difference between 'em. Very, very clean sound and nuances on albums I have heard...

I just hope they have hired an actual mechanical engineer to help design and analyze the SOL prototype.

Has anyone done any internal warranty-voiding modifications? Op-amps even if SMT? D.C. input? I've seen the I2S mods elsewhere on the net, but am looking for all I can find ideawise before I open it up.

The 4490 is a 32 pin package and the 4497 64 pin. Thus, old designs will require (some) layout changes. I imagine new designs are in progress.

Save your money. Pardo is top-notch.

It looks like the ESS9038 has some teething engineering bugs to say the least. Diyaudio.com has a thread where output currents differ by as much as 20% and are still within 'spec' per channel.

It seems like there has been no attempt made to equalize trace lengths on the R2R boards.

Will their be a DAC-less version, ever?

Better channel separation has everything to do with imaging. Your statement seems to contradict itself.

Well my NT-503 Blutooth and network module stopped working. Dead for some reason. TEAC's customer service at this point is terrible. Zero response from multiple emails to the warranty support contact on their home page last week. I'm not too happy. I tried the hard reset in the manual to no...

Please explain how Galvanic Isolation is marketing black magic.

Has anyone done any internal mods to the Mani? Can anything be done?

I have an NT-503 and the Octave Mk2  The sound on the 503 in NOS is very comparable.  I love both DACs.  I tend to find the bass better on the Metrum and the highs better on the NT.  

Yeah, I think as long as the output is 10MHz PPS and 50 ohm BNC you should be in business. 

Military satellites and audio yes! For those looking for GPS clocking for the 10 MHz. Ext. Clock input, I am successfully using this setup with my NT-503:   http://www.leobodnar.com/shop/index.php?main_page=product_info&products_id=234   or (USA) http://airspy.us/     Next you need a 50...