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iBasso fi.Quest Official Thread - Page 45

post #661 of 668

Estimate date to be shipped: 20th Feb.~

 

Specs:

(Given Mad Dog edition and SW1ON/SW2OFF)
 
THD+N (1kHz Sinewave)
600ohm Load 350mVrms 0.0008%
600ohm Load       1Vrms 0.0009%
100ohm Load 350mVrms 0.0007%
100ohm Load       1Vrms 0.0013%
  33ohm Load 350mVrms 0.0008%
  33ohm Load       1Vrms 0.0016%
  33ohm Load       2Vrms 0.0036%
  15ohm Load 350mVrms 0.0018%
  15ohm Load       1Vrms 0.0041%
  15ohm Load       2Vrms 0.0051%
 
S/N Ratio (1kHz Sinewave)
Gain: Low  350mVrms 103.6dB
Gain: Low        1Vrms 112.4dB
Gain: Mid  350mVrms 100.2dB
Gain: Mid        1Vrms 107.8dB
Gain: Mid        2Vrms 113.4dB
Gain: Mid        4Vrms 120.2dB
Gain: High       1Vrms  99.8dB
Gain: High       2Vrms 105.2dB
Gain: High       4Vrms 110.6dB
 
Maximum output power (THD+N<0.5%)
15ohm Load (External Power) 1280mW+1280mW
15ohm Load (Internal Power)   620mW+  620mW
15ohm Load (Internal Power: Maxxed)   940mW+  940mW
 
Dumping Factor
15ohm Load
186 (350mVrms・1kHz) 
170 (350mVrms・80Hz)
174 (1Vrms・1kHz) 
164 (1Vrms・80Hz)
33ohm Load
440 (350mVrms・1kHz) 
489 (350mVrms・80Hz)
420 (1Vrms・1kHz)
462 (1Vrms・80Hz)
 
Frequency Responce
*JP1/JP2 OFF
DC~250kHz (-3dB)
DC~35kHz (-0.2dB)

 

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post #662 of 668

My review (which I thought was up already at TMA) for the newest version, is being republished at the moment. My prior review of the FiQuest was overall positive. MST have fixed every audio issue that I had quibble with making a nearly perfect portable (and massive) amplifier. Those are documented in my 2010 FiQuest review.

 

Soundwise, too, the FiQuest has taken a leap forward, where, prior, it was merely very good and powerful, MST seem to have grabbed what I would call a house sound that consists generally of best-yet percussion and liquid mids. Please look out for the new review. It was published, but went private accidentally. I've found a few areas that need to be fixed up anyway for it. Will update this thread with new information.

post #663 of 668
Quote:
Originally Posted by shigzeo View Post

My review (which I thought was up already at TMA) for the newest version, is being republished at the moment. My prior review of the FiQuest was overall positive. MST have fixed every audio issue that I had quibble with making a nearly perfect portable (and massive) amplifier. Those are documented in my 2010 FiQuest review.

 

Soundwise, too, the FiQuest has taken a leap forward, where, prior, it was merely very good and powerful, MST seem to have grabbed what I would call a house sound that consists generally of best-yet percussion and liquid mids. Please look out for the new review. It was published, but went private accidentally. I've found a few areas that need to be fixed up anyway for it. Will update this thread with new information.

Is it a different size now?

post #664 of 668
Size is the same but there a number of improvements under the bonnet which discerning listeners will probably love b
post #665 of 668
Quote:
Originally Posted by shigzeo View Post

Size is the same but there a number of improvements under the bonnet which discerning listeners will probably love b


Has the board changed?

post #666 of 668

Here's a problem: my original fi-quest is with my dad in Canada. So, comparing the two directly is hard. But there seem to be no major layout changes. Ryuzoh mentioned that in this version (which can get pricey) only the absolute best parts were used. From the outside, the amps are the same, but the performance is different to be sure. I will post my main review this evening.

post #667 of 668
Quote:
Originally Posted by shigzeo View Post

Here's a problem: my original fi-quest is with my dad in Canada. So, comparing the two directly is hard. But there seem to be no major layout changes. Ryuzoh mentioned that in this version (which can get pricey) only the absolute best parts were used. From the outside, the amps are the same, but the performance is different to be sure. I will post my main review this evening.

Interesting. I have all Black Gate non polar in the Super E configuration and I use Tantalum resistors with some modification on the volume control. There are a few other tweaks as well. 

post #668 of 668

Yes, you surely can tweak the FiQuest to your heart's delight. As a platform, it is nearly flawless. That is one of its strengths. In fact, in terms of overall utility, MST hooked into the right (perfect) platform. But as you and I know, it's more than just the platform. I'm in love with the midrange energy of the Mad Max version. In love.

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