The AK4490 has five different build in filters. @Jens can the be switched somehow in the RTX6001, if not which one is chosen?
I also prefer the RTX6001 as DAC currently over my Soekris DAM 1021. However the most obvious differences are at high levels ... I have some hope that this can be fixed (perhaps filter clipping..??) But that gets OT now.
I also prefer the RTX6001 as DAC currently over my Soekris DAM 1021. However the most obvious differences are at high levels ... I have some hope that this can be fixed (perhaps filter clipping..??) But that gets OT now.
Paul BC. Did adding the heat sinks make any material difference, other than long term reliability of course?
Very excited to give it a try this weekend. Sounds like it's both an excellent DAC and measurement tool.
If my software can support using different cards for input and output, I am going to try and measure some DACs on hand.
You may have to run two instances of the software. I have done that sometimes with audioTester. One instance can connect to the device under test and the other instance can connect to the RTX6001.
The AK4490 has five different build in filters. @Jens can the be switched somehow in the RTX6001, if not which one is chosen?
I also prefer the RTX6001 as DAC currently over my Soekris DAM 1021. However the most obvious differences are at high levels ... I have some hope that this can be fixed (perhaps filter clipping..??) But that gets OT now.
And in the Danish DAC championship we have in the red corner JensH and in blue trunks, Soren 🙂
//
JensH, can I loop back the unbalanced output to balanced input using the #17 wiring configuration you refer to?
And in the Danish DAC championship we have in the red corner JensH and in blue trunks, Soren 🙂
//
I don’t have the Soekris DAM 1021, but I have a few sound cards running on USB power which are quite good, and do not differ too much to result in a strong preference, but the RTX really is in a different category. Going back to the other sound cards is really hard. The only thing I can think of to do in the future is to do measurements for FIR filters to compensate the amps and speakers directly using the exact setup.
JensH, can I loop back the unbalanced output to balanced input using the #17 wiring configuration you refer to?
Yes, you can do that. Of course, using balanced all the way is preferable, but not always possible.
Paul BC. Did adding the heat sinks make any material difference, other than long term reliability of course?
I haven't found suitable heat sinks, so no measurements with heat sinks so far.
Paul
We are getting close to the final shipments. Units are ready for immediate shipment.
All order confirmations have been sent.
A few have not paid yet.
If you have not received/seen the order confirmation, please check your inbox and spam folder.
If you haven't received the email, please get in touch with RTX to get it sorted out. Otherwise you may miss the opportunity. 😱
In the unlikey event that you have regretted signing up for the GB please let us know as well.
All order confirmations have been sent.
A few have not paid yet.

If you have not received/seen the order confirmation, please check your inbox and spam folder.
If you haven't received the email, please get in touch with RTX to get it sorted out. Otherwise you may miss the opportunity. 😱
In the unlikey event that you have regretted signing up for the GB please let us know as well.
I would not mind to buy another unit, so if somone ends up not paying, I am interested.We are getting close to the final shipments. Units are ready for immediate shipment.
All order confirmations have been sent.
A few have not paid yet.
If you have not received/seen the order confirmation, please check your inbox and spam folder.
If you haven't received the email, please get in touch with RTX to get it sorted out. Otherwise you may miss the opportunity. 😱
In the unlikey event that you have regretted signing up for the GB please let us know as well.
I would step in in case somebody is leaving the GB
Yes - we are quite a few who have asked that before 🙂
//
I would step in in case somebody is leaving the GB
What? I've heard the GB is going to leave the EU next year. Does leaving Great Britain help acquiring an unit 😀?
Best regards!
Hum ... then I left London in 1997, does it give me any precedence? (DAMN! It was 20 years ago!!)
LOL
@ TNT, sure I will stand in the queue. I noticed the Group Buy too late last december
LOL
@ TNT, sure I will stand in the queue. I noticed the Group Buy too late last december

Hi,
I know I'm late to the party, but if any of these units become unallocated, please put me down for it.
craydive
I know I'm late to the party, but if any of these units become unallocated, please put me down for it.
craydive
I noticed the chassis does get warm. Noticeable especially when it is cold. Is there a better way to heat sink this or is this fine keeping it on 24 hours for a few days?
- Status
- Not open for further replies.
- Home
- Group Buys
- GB for RTX6001 Audio Analyzer with AK5394A and AK4490