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post #1021 of 1184
My New desktop amp Mass Ko Bo 394 pair With Abyss





Edited by rudi0504 - 5/15/14 at 1:02pm
post #1022 of 1184

That's a great amp! It's not too well known here on headfi as its hand built in Japan I believe. Heard it once at a meet and I was pretty impressed with it.

 

How does it sound with the Abyss?

post #1023 of 1184
Quote:
Originally Posted by DarknightDK View Post

That's a great amp! It's not too well known here on headfi as its hand built in Japan I believe. Heard it once at a meet and I was pretty impressed with it.

How does it sound with the Abyss?

mass Ko Bo 394 pair with Abyss SQ is excellent
The best amp I ever heard can drive Abyss
I have tube pre amp from T+AP10.2. SQ is excellent but lack of power / better said current to drive Abyss
High so effortless and better presence
Mid very clear and sweet
Bass :very deep bass impact and very fast bass speed with a lot if detail

It is hand made took about 2 month to order

IMO
post #1024 of 1184
Quote:
Originally Posted by rudi0504 View Post


mass Ko Bo 394 pair with Abyss SQ is excellent
The best amp I ever heard can drive Abyss
I have tube pre amp from T+AP10.2. SQ is excellent but lack of power / better said current to drive Abyss
High so effortless and better presence
Mid very clear and sweet
Bass :very deep bass impact and very fast bass speed with a lot if detail

It is hand made took about 2 month to order

IMO

 

rudi0504,

 

Having owned both the SR-009 and Abyss, do you overall prefer the Abyss (with your current amp)?

post #1025 of 1184
Quote:
Originally Posted by jackskelly View Post

rudi0504,

Having owned both the SR-009 and Abyss, do you overall prefer the Abyss (with your current amp)?

These two are my best headphone

My Stax Set up :
CDP Stello CDA 500 > Stax Amp Srm 727 mk 2 > Pre amp tube T+A P10.2 > SR 009

High : Stax is well known as very clean and clear high , Abyss is slightly below Stax Sr 009 their clarity and detail
Mid : very smooth , sweet and intimate sounding mid, abyss is more forward and as smooth as Sr 009
Bass : very good sounding bass , but less impact and deep than my Abyss.
Separation : Stax has slightly better separation
Soundstage : Stax has wider soundstage , but less depth , Abyss has better depth

Vs

My Abyss set up :
CDP Stello CDA 500 > Mass Ko Bo amp with balance cable DIY > abyss 1266

High : abyss high is slightly behind Stax the clarity , but faster transcient
Mid : sweet but Stax is more intimate , abyss mid is more weight
Bass : this the strong point from Abyss , the best bass reproduction from headphone I ever heard
Very deep and clean and fast bass
Separation : more or less I can say on par
Soundstage :
Stax has better wide , Abyss has better depth

Of I drive use only Stax Srm 727 mk 2 , than abyss use Masx Ko Bo is the winner

With the set up above , they are on par , that hang from the music genre what I heard

IMO
post #1026 of 1184
Quote:
Originally Posted by rudi0504 View Post



These two are my best headphone



My Stax Set up :

CDP Stello CDA 500 > Stax Amp Srm 727 mk 2 > Pre amp tube T+A P10.2 > SR 009



High : Stax is well known as very clean and clear high , Abyss is slightly below Stax Sr 009 their clarity and detail

Mid : very smooth , sweet and intimate sounding mid, abyss is more forward and as smooth as Sr 009

Bass : very good sounding bass , but less impact and deep than my Abyss.

Separation : Stax has slightly better separation

Soundstage : Stax has wider soundstage , but less depth , Abyss has better depth



Vs



My Abyss set up :

CDP Stello CDA 500 > Mass Ko Bo amp with balance cable DIY > abyss 1266



High : abyss high is slightly behind Stax the clarity , but faster transcient

Mid : sweet but Stax is more intimate , abyss mid is more weight

Bass : this the strong point from Abyss , the best bass reproduction from headphone I ever heard

Very deep and clean and fast bass

Separation : more or less I can say on par

Soundstage :

Stax has better wide , Abyss has better depth



Of I drive use only Stax Srm 727 mk 2 , than abyss use Masx Ko Bo is the winner



With the set up above , they are on par , that hang from the music genre what I heard



IMO

 



Hey Rudi,

Have you ever considered getting the kgsshv or BHSE for your 009's?
post #1027 of 1184

Congrads Rudi, agree with your views with the 009 and Abyss. Anyway, here's some of the internals of the MK394:

 

 

 

Very neat layout and screening. Can't take the cover off the transformer / PS side as it's soldered on to the board. Only thing I don't really like are the RCA connectors - they sometimes loose contact with my Stealth Sakras. May change them to other hi-quality ones later hardwired to the board. Not an issue if using XLRs.

post #1028 of 1184
Quote:
Originally Posted by holeout View Post

Congrads Rudi, agree with your views with the 009 and Abyss. Anyway, here's some of the internals of the MK394:







Very neat layout and screening. Can't take the cover off the transformer / PS side as it's soldered on to the board. Only thing I don't really like are the RCA connectors - they sometimes loose contact with my Stealth Sakras. May change them to other hi-quality ones later hardwired to the board. Not an issue if using XLRs.

Thank you
Wow looks so clean
post #1029 of 1184
Quote:
Originally Posted by zachchen1996 View Post

Quote:
Originally Posted by rudi0504 View Post



These two are my best headphone



My Stax Set up :

CDP Stello CDA 500 > Stax Amp Srm 727 mk 2 > Pre amp tube T+A P10.2 > SR 009



High : Stax is well known as very clean and clear high , Abyss is slightly below Stax Sr 009 their clarity and detail

Mid : very smooth , sweet and intimate sounding mid, abyss is more forward and as smooth as Sr 009

Bass : very good sounding bass , but less impact and deep than my Abyss.

Separation : Stax has slightly better separation

Soundstage : Stax has wider soundstage , but less depth , Abyss has better depth



Vs



My Abyss set up :

CDP Stello CDA 500 > Mass Ko Bo amp with balance cable DIY > abyss 1266



High : abyss high is slightly behind Stax the clarity , but faster transcient

Mid : sweet but Stax is more intimate , abyss mid is more weight

Bass : this the strong point from Abyss , the best bass reproduction from headphone I ever heard

Very deep and clean and fast bass

Separation : more or less I can say on par

Soundstage :

Stax has better wide , Abyss has better depth



Of I drive use only Stax Srm 727 mk 2 , than abyss use Masx Ko Bo is the winner



With the set up above , they are on par , that hang from the music genre what I heard



IMO

 



Hey Rudi,

Have you ever considered getting the kgsshv or BHSE for your 009's?

I have heard BHSE , but I haven't heard KGSSHV

So far I prefer my Stax set up than BHSE

IMO
post #1030 of 1184

Interesting that they appear to be using a switchmode power supply. This is not a 2 box design is it with the transformer in another chassis?

 

Thanks for sharing the images, I had been curious what was under the steel shield.

 

..dB

post #1031 of 1184

MK394 does not have a external PSU. It does appear to be a switch mode ps. Superb sounding amp for LCD X, HD800 and Abyss though. I'll study the circuit traces a bit more from the bottom side of the board next time I remove the covers.

post #1032 of 1184

good to hear that you have such a positive experience with the amp . My guess at the design is a simple ( and I like simple ) opamp gain stage with a push pull classA output stage. The power resistors on the output most likely attenuate the noise floor ( this is purely a function of high bias output stage ) . I am sure the engineers put a lot of R&D into the psu to keep the noise floor lower than an off the shelf SMTP supply. I have read some of work being done in this area and it is very promising for the mass market, it would be great not to have to rely on massive power transformers and complex regulators for clean power. 

 

thanks for sharing your experience and the details of the amp, I will hopefully get to hear the Abyss on the amp one day. 

 

..dB

post #1033 of 1184
Sunday morning set Up

Source : AK 240 through LINE OUT
Desktop Amp : Mass Ko Bo 394 full balance HP amp
Gain : High
Volume : Max 11 - 13
Headphone : Abyss 1266
Cable : Centrance RCA to 6,3 mm plus 6,3 mm to mini plug Furutech

My impression

High : very clean, Clear and best clarity and better presence compare With Other Amps , is similar to mynStax SR 007
Mid : very sweet Clear abd clean midrange With very Good pronounce so effortless
Bass : The best Bass i Ever heard from Abyss pair With Mass Ko Bo , very Deep detail and very Good bass impact
Separation : excellent separation This is on par With Stax SR 007 mk2
Soundstage : very Wide and very Good Depth is like In very big concert hall
Background : very black background / very quiet

Overall :

Abyss best Synergy pair With Mass Ko Bo 394 , i can hear The Max potential from My Abyss now , The clarity almost like Stax headphone , very sweet and intimate sounding mid With better pronounce and clarity , that i can hear how The sanger breath very noticeable .the plus Point Abyss pair With Mass Kobo is teh strong And very Deep bass reproduction
I Ever heard on headphone , and very clean sounding. Bass too With very well controlled bass Speed
Even though With The source Only AK 240 has so excellent sound quality .
If i pair With High End Transport and DAC , Mass Kobo can produce even better
My friend Said like High End home Set Up 50 K USD hahaha
IMO



post #1034 of 1184
Hiya! Has anyone tried aftermarket cables with the Abyss? I would love to hear about your experiences! smily_headphones1.gif
post #1035 of 1184
Quote:
Originally Posted by Kiats View Post

Hiya! Has anyone tried aftermarket cables with the Abyss? I would love to hear about your experiences! smily_headphones1.gif

There probably isn't much point given the quality (and price!) of the included cable.

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