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Posts by klfl

SOLD.
Fairly speaking, both R2R and Sigma-Delta are approximation. R2R and S-D all output discrete signal levels and cannot 100% restore sine waves, in other words, both are digital approximation. The difference here is they are providing such approximation with different approach. With all due respect, your comparison on the HA-1 and DAC-19 is about the final products as a whole picture rather than the chips used. There are too many design differences between the two machines...
The above graphs of the S-D converter are unfiltered. The article is comparing output from S-D modulator (a part of complete S-D DAC signal chain) vs R2R DAC. Which makes the presentation quite misleading.  Actually the article demonstrated how S-D modulator is able to shift noise to a higher frequency band so artifacts can be filtered out easily. Actual S-D DAC have filter after modulator to remove high frequency noise. By design the analog filter is one integral part of...
First owner Since June. Fully functional without issue. Headphones in excellent condition in original box. This pair is from very new production batch. No smoking household.   Shipping in US is on me but please add 3% to cover paypal fees.   No trade and firm on price. Thanks for looking.
First owner Since May, purchased from an authorized retailer. Fully functional without issue. Headphones in excellent condition in original box. This is the latest fazor version with new model storage case. No smoking household.   Certificate card shows manufacture date of May 2015. And the warranty is good for 3 years.   Includes: Headphone Carring Case 6.35mm to 3.5mm cable 4pin xlr cable 6.35mm cable Paperworks   Insured shipping in US is on me but please...
SOLD.
For sale is a Bryston BHA-1 balanced headphone amp in excellent condition.  Fully functional without issue with everything original. The amp is 8 months old. Warranty is good for 20 years. No smoking household.   Buyer please cover shipping and paypal fees.   No trade and firm on price, US only at the moment. Thanks for looking.
First owner, this V281 unit is 2015 production. Fully functional without issue. The amp is in excellent condition with everything original. This unit has silver faceplate, black feet, standard 41 step volume control and no DAC option. MSRP in the US is $2299 from violectric-usa.com. No smoking household.   Due to the modular design of Violectric amps, it is very easy to upgrade volume options or add a DAC in the future. Just shoot them an email and they will provide the...
First owner, bought in 2015. Unit in like new condition and works without issue. This amp has 41 step attenuator and latest 24/192 USB DAC installed.   The V100 is one of the favorite amps of the designer of HD800, Axel Grell. And it is also an excellent match for HD6XX series. New unit goes for $759 (amp) + $249(DAC) right now.   As of now the official Violectric Driver does not support Windows 8.1. However Windows 8/7/Vista/XP, Linux, Mac will work fine with the DAC....
For sale is a Schiit Lyr 2 amp. Unit in very good condition and comes with 3 pair of tubes. Also has socket extender installed for easier tube swapping. No smoking household.   Tubes are: Philips Miniwatt E188CC "Holy grail" Holland x2 Amperex 6DJ8/ECC88 Bugle Boy Holland x2 Raytheon 6BQ7A x2 These 3 pairs together will cost close to $300 if you buy on the market now   Free shipping anywhere in the US. Paypal only. Buyer add $10 for paypal, unless send as...
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