HRT DSP / iDSP

[Dexter Morgan]

I wouldn't expect these to have much an effect with Apple earbuds. I imagine they need something more capable of reproducing sound with greater subtlety and detail.
 
I wonder if the effect is less pronounced with headphones that require more power to drive (over-ears), and more pronounced with less power hungry IEMs. That's my hope anyways, as I would be using these with the K10. For those that have the i-DSP, can anyone test to see if the effect is more noticeable with IEMs versus over-ears?
 
Edit: Thanks for the links to the reviews, by the way. Will check them out.

 

[tafens]

I usually mirror my reviews between Head-fi, XDA, and AndroidForums and Amazon So XDA review link (that is the only site where i post under "vectron") is a mirror of my head-fi review from the second link above

Google lesson #1: Do not search for reviews when in a hurry.

(edit: quotes)

 

[Lohb]

I need to recommend a non-sabre DAC for my friend to hook into a T-amp which goes on to Fostex T50RP's... I think this might be an OK basic starter DAC vs something like a Sabre U2 which is a bit glary/analytical...the T-amp is on the warm side with a slight tubiness to its tone......
 
I think it may be a good choice ?

 

[kostaszag]

  My DSP works fine with LG G3 stock player on Lollipop and USB Audio Pro Player, and I am very pleased with the results (Etymotic Research ER-4P). It gives everything more air, enough for any mobile device sound improvement. However, it refuses to play on Onkyo HF Player every time saying that it fails to connect with the DSP and then shutting the player itself down. Samsung Galaxy Tab S (also 5.0) plays well with UAPP, does not work either with the stock player or Onkyo HF.  Compatibility mysteries continue... HAs anybody tried Onkyo HF with the Android version? 

 

 

Onkyo HF Player will not work with dSp. It has no volume control of its own, so it can only work with DACs that have some sort of volume control, either digital or analogue.

 

[mediabox]

 
Onkyo HF Player will not work with dSp. It has no volume control of its own, so it can only work with DACs that have some sort of volume control, either digital or analogue.

In the latest version they have added - 

What's New

•Support added for volume control of USB-audio-compatible external hardware
Volume level of USB-audio-compatible devices featuring volume control circuitry can be adjusted by manipulating the volume keys of your Android device.
 
So is it the HF or dSp?

 

[kostaszag]

 

 
Onkyo HF Player will not work with dSp. It has no volume control of its own, so it can only work with DACs that have some sort of volume control, either digital or analogue.

In the latest version they have added - 

What's New

•Support added for volume control of USB-audio-compatible external hardware
Volume level of USB-audio-compatible devices featuring volume control circuitry can be adjusted by manipulating the volume keys of your Android device.
 
So is it the HF or dSp?

I know, I tried that with my Geek Out 450 and a power bank and it didn't work. Maybe because I don't have the Hi-Rez add-on. 

 

[mediabox]

 
I know, I tried that with my Geek Out 450 and a power bank and it didn't work. Maybe because I don't have the Hi-Rez add-on. 

I do have this option, and still it would not connect for whatsoever reason. I wrote both HRT and Onkyo about it. OMG! Now the stock LG G3 player on Lollipop stopped playing... In a nutshell: when it works, the dSp is a beautiful SQ addition for the money, and when it doesn't, well - it is not... Anybody with the Onkyo HF experience?

 

[mediabox]

Victor Wooten A Show Of Hands 15 24bits / 44.1kHz FLAC UAPP+Samsung Tab S 10.5 +ER-4P+dSp   What a joy!

 

[tafens]

Does anyone know what USB/dac/amp chips are inside the dSp? Or is it some sort of proprietary programmable solution? The HRT product page does not say.

It does say this, which suggests either an entirely proprietary programmable solution, or programmed sound processing in addition to a regular dac chip, but which is it: "The i-dSp incorporates proprietary digital Sound processing and conversion along with a high-performance headphone amplifier, all within an extremely portable form factor."

edit: except from the i-dSp product page

 

[Lohb]

Does anyone know what USB/dac/amp chips are inside the dSp? Or is it some sort of proprietary programmable solution? The HRT product page does not say.

It does say this, which suggests either an entirely proprietary programmable solution, or programmed sound processing in addition to a regular dac chip, but which is it: "The i-dSp incorporates proprietary digital Sound processing and conversion along with a high-performance headphone amplifier, all within an extremely portable form factor."

edit: except from the i-dSp product page

Interested in this too...am guessing they went for TI again like microstreamer which I just picked up last night...I'd like to do both of them head-to-head...'battle of the micro DACs'.

 

[lior amsalem]

I've placed my order on Amazon but the item is still: Temporarily out of stock.
 
Also, did anyway have a chance to try the i-dSp with iphone/ipad and newer iOS 8.3?
 
LA

 

[tafens]

Also, did anyway have a chance to try the i-dSp with iphone/ipad and newer iOS 8.3?

Yes, it works well. I have an iPhone 5S with iOS 8.3.

 

[mediabox]

Tried it with this Japanese wonder for PC - puts things on another SQ level. Before that one has to download ASIO4ALL though.
 
 http://www.head-fi.org/t/705387/bug-head-emperor-player-audiophile-player-from-japan

 

[kostaszag]

I have been facing a weird problem ever since I received my dsp. I cannot connect another DAC to my cellphone. To be accurate, I cannot connect my Geek Out 450, which I have been using before., the phone will simply not recognize it as a USB device. My phone is a Sony Xperia Z2 running Android 4.4.4. Has anyone had a similar problem after connecting their dsp on the phone?

 

[zolom]

Yes. Same issue with Headstage Arrow 5P amp/dac on my lg g3 (android 5).
Rebooting the phone enabled to connect the other amp.
Will contact HRT.