OK, so, the Ah! Njoe Tjoeb does not appear to have a volume control - the volume control in the Kenwood KA9100 does not seem to effect the the headphone output from the Ah! So, it was too loud.

The KA9100 has an output jack. I listened to little bit of a Roy Orbison CD. Sounded OK, but not as good as the output from the Sony CA9ES or the Harman Kardon PM665 amp.

I like the phones!

Enjoy the Music. Trust your ears. Laugh at Folks Who Claim to Know it All.