Mini3 inspired DIY headphone amplifier

Just finished my Mini3 inspired headphone amplifier.. here are some pics ( the PCB shown is a modified version)

200 Watts LM3886 Subwoofer amplifier.

Just finished soldering of my 200 Watts amplifier meant for Subwoofer. Amplifier is basically 2 modules of Paralleled LM3886 amp(each 100W) running in bridged mode. Here are some pics.

The Sub filter used is Subwoofer Filter PCB and Power supply under construction.

Mini DIY Cmoy

Here is an easy home made Headphone amp with 2-gain settings (10x & 6x) with small footprint for portability. Powered with an onboard 9 Volts battery and external supply option also.

Four screws will secure the battery between main PCB and another top blank PCB. .
I am planning a denim stiched pocket cover for this one. .

(There was an error in routing around volume control which is corrected in the PCB schematic as shown).

Cmoy Headphone amplifier

Just finished with my Cmoy headphone amplifier inspired from Headwize.com.
Chu Moy made a very basic and simple headphone amplifier based on OPA2134 op-amp by Texas Instruments.

I was having OPA4134 so thought of using the 2 spare channels for a line out, may be to drive another pair of headphones.
Apart from running headphones crystal clear, another advantage is that it can act as gain enhancer for my gainclone when watching movies from PC. here are the pics.