The value proposition for this amp is amazing. It offers a fully balanced/differential amplification with 3.6 watts per channel into a 50 ohm load. The hybrid approach gives you the best of both worlds, the power of solid state and the musicality of tubes. I am the original owner, with less than 100 hours on this amp. Here are some reviews and measurements on this awesome little bit of kit:

https://headfonics.com/monoprice-monolith-liquid-platinum-first-contact/

https://www.themasterswitch.com/Monoprice-Monolith-Liquid-Platinum-review

https://www.audio “science” review/forum/index.php?threads/monoprice-liquid-platinum-headphone-amp-review.7036/

I no longer have the original box but the amp, power supply and tubes will be carefully packed for the journey to this amp's lucky new owner.