Van Alstine's 240 amp and integrated. How good??

Van Alstine is a respected name in audio for his upgrade service. However, I am curious what is the sound quality of his basic amps Synergy 240, 440, and his integrated amp of 100RMS based on the stereo amp Synergy 240. You rarely see reviews on this product. How does his Synergy 240 basic amp compare with the Odyssey Khartago basic amp. Both are direct marketers, so you can't just walk into your local audio hut to audition them. Therefore, feedback needed from members who have owned or listened to these amps