Yes i have tried AK 240 pair With Cypher Labs Duet :
source : AK 240 use LINE OUT
Amp : Cypher Labs Duet use Low Gain
Headphone : Beyerdynamic T5p stock cable
LCD XC SAA. endorphin balance 4 pin > balance 4 pin to mini plug
Cable : mini to mini Crystal Cabel Dreamline DIY
Music file : WAV ,AIFF , FLAC hi rest 24 bit / 196 KHz and DSD
My impression :
High : very detail and very clear and very good clarity
Mid : very clear and sweet and natural mid that I can hear every clear how the Sanger breath
Very good pronounced and rendering
Bass : very good impact and fast bass reproduction and very clean and detail
Separation : very good separation that for close I can detect very clear the musician placement
Soundstage : wide and very good depth , that I feel not like close headphone
Background : very black background
Hissing : No hiss
Overall :
Duet is new amp , the SQ is one level above my old school Headroom portable micro amp and pico dac amp
With duet pair with AK 240 has very good synergy , very good rendering , at low Gain I have power full
Amp to drive T5p and LCD XC .
The best synergy pair with LCD XC , with T5p the bass is not so tight
Duet is my favorite amp for all rounder music genre
That's why I have two sets Duet one in Silver and one in Copper
Note :
Before I go ins bed , I heard DSD file from OPUS 2 : teach me tonight and Here's that rainy day , wow my hair stand up now , how beautiful DSD sound quality with this set up on my LCD XC , like your musician blow saxophone near you , man o man I love it , I can sleep well tonight hahaha
IMO
I
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Thanks Rudi, I have been reading a lot of good things about the duet, I think it will make a nice pairing with my HD-800.