Had listen to this amp paired with my B&W P5 headphone. Loved the sound. User manual stated that I can use the GE5654 as direct upgrade to the original tube. Will order and try. Thanks for quick shipment.
Bluetooth and usb connections are working very well. Good product with a reasonable price. One minor complaint: The power plug has a blue LED. It shines too strong. It hurts my eyes. It should be replaced with a weaker one. Or it may be removed because it is not necessary at all.