Karl Sigman has posted a review of the Wyred 4 Sound W4S mAMP monoblock amplifiers ($1798/pair) at Audiophilia. His conclusions:
“The Wyred 4 Sound W4S mAMP Monoblock Amplifiers are truly remarkable for their price/performance ratio. And, it is mind boggling to see such performance come from such tiny and light devices. Be mindful of your ancillary equipment. They are very revealing of source and down the line components. Experiment and have fun. As such, these ‘Little Guys’ get my highest recommendation.”
You can read the full review here.