The first one speaks for itself. Ngl i like the look of it and 8$ for a single dip8 chip cover.
Second is a "HI-END Audio Buffered Dual Op Amp Upgrade". Well this thing puts a second dual opamp as a buffer. It have 3 tiers of "grade of quality", the tiers are :
PG=Professional Audio Grade, IG=Instrument Grade, AG=Aerospace Grade and it increases in price as well. PG : 26$ IG : 46$ AG : 87$. The only thing changes are the capacitors.
Third one is a same type board with some added capacitors from the same seller. This one comes in 2 types, single or dual opamp and it comes in the same 3 flavors of PG,IG,AG.
The simpler one is PG : 10$ IG : 18$ AG : 36$ The one with the extra extra caps are PG : 15$ IG : 26$ AG : 47$ They probably create more problems than increasing sound quality.
The last one is a "High End custom opamp". Well its a mystery chip with some added capacitors since they sanded down the text. In one pic they kinda failed and some numbers are still visible on the chip. First row ???82, second row ???603. Surprisingly this one does not have the 3 grade but the price is just ridiculous. Left: 129$ Right: 214$
These are some nice "inventions" but the chance of them doing anything good is very low. I'm 100% there are even more of these out there that i haven't found. When i searched for the name, the first thing that popped up was a "vibrating phone app for women" so yeah.
EDIT: Trying to fix the pic ratios.
Second is a "HI-END Audio Buffered Dual Op Amp Upgrade". Well this thing puts a second dual opamp as a buffer. It have 3 tiers of "grade of quality", the tiers are :
PG=Professional Audio Grade, IG=Instrument Grade, AG=Aerospace Grade and it increases in price as well. PG : 26$ IG : 46$ AG : 87$. The only thing changes are the capacitors.
Third one is a same type board with some added capacitors from the same seller. This one comes in 2 types, single or dual opamp and it comes in the same 3 flavors of PG,IG,AG.
The simpler one is PG : 10$ IG : 18$ AG : 36$ The one with the extra extra caps are PG : 15$ IG : 26$ AG : 47$ They probably create more problems than increasing sound quality.
The last one is a "High End custom opamp". Well its a mystery chip with some added capacitors since they sanded down the text. In one pic they kinda failed and some numbers are still visible on the chip. First row ???82, second row ???603. Surprisingly this one does not have the 3 grade but the price is just ridiculous. Left: 129$ Right: 214$
These are some nice "inventions" but the chance of them doing anything good is very low. I'm 100% there are even more of these out there that i haven't found. When i searched for the name, the first thing that popped up was a "vibrating phone app for women" so yeah.
EDIT: Trying to fix the pic ratios.
