LKS MH-DA004 DAC, black with upgraded usb boad and EVS $500 mod installed in it.
Cost $2K with mod
Sell $950 Buyer pays shipping and paypal fee of $65
Please see my 100% positive feedback on Audiogon (same name)
https://shenzhenaudio.com/products/l-k-s-audio-lks-mh-da004-dual-es9038pro-flagship-dac-dsd-input-i2s-coaxial-bnc-aes-ebu-for-dop-usb-i2s-optical-audio-decoder Excellent condition.
From EVS, regarding mods, "The Basic mod I have worked out is $500 plus return shipping and makes a serious improvement in involvement, reality, dynamics, low level detail, imaging, depth, air, lower distortion......well, basically everything. I do mods to the AC power, the DC power, output stage filtering, all output stages, the spdif type inputs, etc.:
1. Remove fuse distortions.
2. Twist AC wires from IEC to power switch
3. Hard wire all AC connections to IEC inlet
4. Re-ground the shield wires from the transformers and hardwire.
5. Remove all steel from around the transformers and remount transformers on pieces of wood.
6. Twist secondary AC wires.
7. Apply Graphene contact enhancer on AC connectors on board.
8. Damp all rectifier diodes with constrained layer damping material
9. Damp all heatsinks with constrained layer damping material.
10. Remove all coupling caps on the spdif inputs and replace with custom pure copper wire in cotton (listened to for directionality).
11. Shorten the signal path on the unbalanced outputs and use our custom wire here.
12. Eliminate one pole of filter caps in output stage.
13. Change all 16 compensation caps in all output stages to better ones.
14. Damp certain power supply caps
15. Change metalized polyester caps on 3.3V power supply to DAC with modified polyprop caps.
16. Properly orient poly caps on output of regulators for output stage.
17. Change IV resistors to high quality ones.
18. Eliminate distortion producing parts (3 of them)
19. Remount output transistors in IV stages and bend them forward so they are no longer close to the power supply caps and put a very thin piece of cardboard between the transistors and caps to further reduce their temperature.
Further mod details at EVS website:
http://tweakaudio.com/EVS-2/LKS_Mods.htmlThe stock LKS MH-DA004 features dual ESS flagship ES9038pro chips, each of which work in mono mode and individually function for the left and right channel. Plus, this unit has all of the inputs and outputs you could want from a flagship DAC—including USB optical, I2S-H, I2S-E, coaxial, BNC, and EBU inputs, and dual XLR and RCA outputs. To make sure the MH-DA004 is properly implemented and properly powered, LKS Audio equipped it with two high-quality transformers to achieve six sets of AC power supply: a total of 13 groups of low-noise regulator circuits.
SPECS
LKS Digital Audio
Dual mono-mode ESS ES9038pro chips
Ultra-low-jitter 82fs clock at 100 MHz
Up to 13 groups linear power supply for different circuit part
Discrete shunt power supply for analog output part
Discrete circuit for I/V and LPF circuit
Cardas rhodium-plated RCA output connector
Furutech AC power socket
2 I2S input ports: RJ45 type and HDMI type for I2S/DSD source input
Amanero Combo384 USB card: DSD64, DSD128, (Windows, DSD256, DSD512), PCM44.1K~384K
AES/EBU, COAX, BNC, OPT support: 44.1K, 48K, 88.2K, 96K, 176.4K,192K S/PDIF input (DoP acceptable)
XLR: 5 Vrms
RCA: 2 Vrms
Digital volume control: 0–127 dB (0.5 dB step)
Large VFD display
THD: <0.0003%
Dynamic range: > 125 dB
SNR: > 120 dB
Dimensions: 17.3 x 12.6 x 3.5 in (440 x 320 x 90 mm)
Net weight: 17.2 lbs (7.8 kg)
