iBasso fi.Quest Official Thread

[theory_87]

Instruction manual
Quote:

Originally Posted by ryuzoh /img/forum/go_quote.gif Very sorry for late and I'm modding 8 fi.Q's from yesterday and struggling to make guidances. The switches on above side will set for...... SW1; BUF634 Wideband mode ON/OFF with 200 ohm connection btwn 1-4 pin. SW2; Output impedance changing switch (aka A47), and will improve stability for unstable OPAMPs, also changes proportion of output currents from buffers and OPAMPs.(Highly recommended to set this ON) Output current proportion When ON, OPAMP : BUF on front : BUF on bottom = 1 : 1 : 1 (OPAMP works 1/3), can achieve less distortion, stability. When OFF, OPAMP : BUF on front : BUF on bottom = 1 : 5 : 5 (OPAMP works 1/11), can provide more driveability for low efficient headphones. If you mind the hiss, are you using with default setting?

 

[theory_87]

Ok. Pictures speak a thousand words.

The inside

My Current setup

 

[theory_87]

ryuzoh, ibasso did not send me the caps. How do I go on to obtain them?

 

[shigzeo]

This is a lovely amp and so too, is its prototype! March will be a great time!

 

[charlie0904]

something seems to be missing...

 

[SpudHarris]

Now I'm worried.......

 

[qusp]

blonde moment

 

[theory_87]

Let wait for ryuzoh to reply 1st. I'm sure there is some miscommunication somewhere.

 

[jamato8]

Quote:

Originally Posted by theory_87 /img/forum/go_quote.gif Let wait for ryuzoh to reply 1st. I'm sure there is some miscommunication somewhere.

Yes looks like one that was to go to Ryuzoh for caps.

I can't read on yours the shipping method. Was it DHL or UPS?

 

[theory_87]

Quote:

Originally Posted by jamato8 /img/forum/go_quote.gif Yes looks like one that was to go to Ryuzoh for caps. I can't read on yours the shipping method. Was it DHL or UPS?

it was through fardar. I have no idea what company it is. But as long as goods arrive, I don't mind. And it only took 1.5 days to reach me from China (i'm in the same time zone as Beijing)

I'm in no hurry now since I send my sf5eb for reshelling and ACS T1 for rma.

 

[ryuzoh]

Quote:

Originally Posted by theory_87 /img/forum/go_quote.gif ryuzoh, ibasso did not send me the caps. How do I go on to obtain them?

You said me to buy BGs by yourself and let the PCB with no caps.

 

[shigzeo]

Funny, I didn't notice the missing caps! Obviously, the order system either has to be tweaked, or there needs to be perfect communication. Hope you get your caps soon.

 

[ryuzoh]

The PCBs for qusp, theory_87, and uvak will be arrived with no caps.

Qusp's is having UTSJ 10000uF/16V as C1-C2, and the others will be shipped to be modified by me.

 

[qusp]

like I said I dont mind, its how I wanted it with no caps. sounds like there wasnt even a miscommunication. I was only commenting because ibasso said to me all amps were the same and I doubt everyone wants it like this. I repeat. its all good by me

less work. you got the buffers and opamps though right?? aside from the 2 optional SMD places on the underside?

I do think that perhaps not everyone at ibasso has their head around this order and some special circumstance orders. but that is to be expected

by that I mean not everyone there, not in the workshop, because by the looks of the build its pretty sweet!!

I want to make it clear that I was not accusing ibasso of anything. but as it stood there did seem to be an explanation needed. and it is given

there were indeed special cases apart from the 10000uf caps for me, but its just the person I spoke to initially must not have known about any special circumstances orders and so told me all were the same.

this was too mucgh for my little brain to take in and I have been recovering from it ever since ;P

 

[theory_87]

ryuzoh, I believe it all miscommunication. Don't get it wrong. I don't have the intention to blame you or ibasso. You got pm