Interesting link. I'm really curious of your progress :)

A few things... (and I'm not an expert) The pancake cells aren't in series when you connect them to the charging board... So when you say I don't get what you mean. Do you have another charging board ? You would need to solder 4 contacts, not 2. So you only get "series" on the output of the...

It would be interesting to see your 18650 in series. :dt880smile: But why wouldn't you go pancake style ? I looked on AliExpress. You could go with three of 503035 3.7v 500mah Lithium 303450 3.7V 1000mAh Lithium 302530 3.7v 500mah Lithium I would prefer the bottom ones because they give you a...

Aaand I think the middle battery is on the one side connected to the upper batteryterminal an on the other side to the lower batteryterminal. So that's how they get 11V (I think). Maybe 2x(3.7 + (3.7/2)) ? It's just a guess. Such a nice amp.

Let us know what your next move is.

I was (am) in the same position a year ago and didn't follow up (didn't buy new batteries). I think the statement about 11V (was in every review at the time of release) is true but don't know how it is done. But... look at my photos 😁 Wires explained right ?

Just received mine today from HDPHNS Netherlands, I live in Belgium.   This was the sound I was hoping for and I got it right from the start.  Potent, authoritative, oodles of reserve power.  And I've only just started using it  The amount of bass that gets added by using the boost switch is...

I just finished soldering smd :) (my first time).   I replaced the TPA302 with a TPA152 found here.   Results are, right away, spectacular.  Widening of the soundstage, crisper highs, fuller deeper lows.  I can also hear a lot more detail then with the 302.  For me, the 10 Euros I spent...

I didn't invest in expensive parts because I wanted to test this configuration first.  And the hum is coming from the amp, not from the resistors.

Hi all,   For a long time I wanted to use my 2x20 Watt Class A Musical Fidelity Amp for driving my headphones.  Because of oxidation of all switches/volumepot I desoldered these a long time ago.  It now only takes one input signal and is always full power (volume has been bypassed).  Then I...

about 4/5 down this page, it says   quote: Before I wrote him, it still was tpa152, I checked.   Texas Instruments states for tpa302    Quote:     while for tpa152 it is   Quote:   I would have liked the tpa152 driving my t-box, rather then this tpa302...

After I wrote wangshuzeng about the change to amplification chip tpa302 (from tpa152), the website at tcgcn got updated.   A new tpa152 costs about 3 euros.  I think I'll buy and solder it myself.  I've never done any smd before 

Some more pics      amp is a Texas Instruments tpa302    

There isn't any give between the woven outer sleeve and the inner cable.  It is as thick as it seems :)