[Andykong]

It's quite depends on your luck by purchasing this Amp ! It seem the MK I problem still carried on MKII . Dame !

This is a very interesting observation, but can you provide more information regarding the "MK1 problem"? We would like to find out more detail if there is a problem that we don't know and improve our product in subsequent developments.

 

[Andykong]

Was using the Sennheiser HD 820 while the Susvara was en route. It was suspected that the C5088 transistor in the power supply was causing the noises.

The Sennheiser HD820 which is 300 ohm so set impedance to “H” which produced extremely high electrical background noises.
I set it at “M” and noises is lowered by a bit and finally if leave it at “L” the noises reduced a little more but still clearly audible.
It sound like a bad set of tubes or a noisy transformer.
My current set up with absolutely no noises unlike HA-300 MK2.

We didn't test HD820 with HA-300MK2 specifically, but we have used HD800 and HD800S in multiple shows and events as demo headphones for HA-300MK2, They always work fine in our demo setup and they shouldn't generate extremely high noise in H or M impedance setting as described.

Did you send your HA-300MK2 back to your dealer for repair or replacement? and your dealer confirmed that the C5088 transistors are faulty and they need to replace the transistor? I hope your amplifier has been taken care of and you can enjoy your HD820 with HA-300MK2 when you receive your repaired am[lifier (or replacement unit).

By the way, your original setup was Luxman CL-1000 preamp + BAT VK-655SE power amp driving HD820? and you bought the HA-300MK2 to replace the CL-1000 and VK-655SE combo for headphones? or you use the CL-1000 as pre-amp for HA-300MK2?

 

[dnd3241]

This is a very interesting observation, but can you provide more information regarding the "MK1 problem"? We would like to find out more detail if there is a problem that we don't know and improve our product in subsequent developments.

Check your return records that will showed all the problem. Mostly is the background noice. HA-6A and the HA300 MKI both have the same problem ! I really hope this new version can present a dark picture even on the high gain volume.

 

[Andykong]

Check your return records that will showed all the problem. Mostly is the background noice. HA-6A and the HA300 MKI both have the same problem ! I really hope this new version can present a dark picture even on the high gain volume.

Yes, we have encountered some problems with HA-6A and we have rectified that already.

Nope, we didn't have an abnormal return problem with HA-300MK1 due to noise problem, that's why I try to find out from you.

By the way, there is no such thing as high gain in a tube amplifier. Not in HA-6A, HA-300MK1, or HA-300MK2.

 

[Ysound]

We didn't test HD820 with HA-300MK2 specifically, but we have used HD800 and HD800S in multiple shows and events as demo headphones for HA-300MK2, They always work fine in our demo setup and they shouldn't generate extremely high noise in H or M impedance setting as described.

Did you send your HA-300MK2 back to your dealer for repair or replacement? and your dealer confirmed that the C5088 transistors are faulty and they need to replace the transistor? I hope your amplifier has been taken care of and you can enjoy your HD820 with HA-300MK2 when you receive your repaired am[lifier (or replacement unit).

By the way, your original setup was Luxman CL-1000 preamp + BAT VK-655SE power amp driving HD820? and you bought the HA-300MK2 to replace the CL-1000 and VK-655SE combo for headphones? or you use the CL-1000 as pre-amp for HA-300MK2?

I purchased the HA-300MK2 with the intention of using it with the Susvara which was a few days behind on delivery.
While waiting for the Susvara I listens with the HD820 but the noise issues so I ship it back to the dealer for a replacement and went back to the old Auralic Taurus amp.
The Susvara showed up a few days ago and I've using BAT and Luxman setup with it, an extremely excellent match up.

 

[bdjul]

I also have some noise issues, but with susvara it is dead silent

 

[justanut]

Just perfect with my fav cans. Ordering a pair of Linlai Elite 6SN7 to try, while I save up for a pair of WE 300B~ 5 years warranty trumps any sonic advantages that Takasuki may possess imo..

Still, looking forward to tube rolling experiences by other owners!

 

[rmsanger]

just curious if the Mk2 review has ever been published? Sorry I forgot which user and which publication had the review unit... I think we said it would take 6-8 weeks for a proper review which we're getting close to.

 

[paradoxper]

Just perfect with my fav cans. Ordering a pair of Linlai Elite 6SN7 to try, while I save up for a pair of WE 300B~ 5 years warranty trumps any sonic advantages that Takasuki may possess imo..

Still, looking forward to tube rolling experiences by other owners!

Dang. The grain of your R10 looks fantastic.

 

[justanut]

My Linlai E-6SN7 are in.

Giving me OCD because the filament on both tubes isn’t parallel.. wording on the tubes are in different shades of gold too..

Thankfully the both work and sounds good out of the box. However I’ve noticed a greater difference in the VU meter.. hopefully that changes with burn-in??

 

[ThanatosVI]

My Linlai E-6SN7 are in.

Giving me OCD because the filament on both tubes isn’t parallel.. wording on the tubes are in different shades of gold too..

Thankfully the both work and sounds good out of the box. However I’ve noticed a greater difference in the VU meter.. hopefully that changes with burn-in??

Keep us updated with sound impressions

 

[justanut]

Keep us updated with sound impressions

Haha I'll try but I barely knew the Tung Sol before swapping them out I'm just glad nothing horrible stands out. Slow burn time~

 

[justanut]

Question: Can the cage of the HA300ii fit taller tubes like EML-300B XLS? Can't seem to find dimensions for those tubes..

 

[Palyodgree]

My Linlai E-6SN7 are in.

Giving me OCD because the filament on both tubes isn’t parallel.. wording on the tubes are in different shades of gold too..

Thankfully the both work and sounds good out of the box. However I’ve noticed a greater difference in the VU meter.. hopefully that changes with burn-in??

The Linlai brand of 6sn7s i have considered awhile ago I found a source they test and cheery pick pairs of brands they carry then sell for a little extra to those of us that suffer from OCD though I haven’t yet ordered a pair for now all is sounding exceptionally good I’m going to leave it alone Looking forward to your evaluation.

 

[paradoxper]

Question: Can the cage of the HA300ii fit taller tubes like EML-300B XLS? Can't seem to find dimensions for those tubes..

IIRC 190mm tall. Does not look like they will fit.