I have a pair of Essence and have just transitioned to tubes from solid state-- actually, I'm still in transition as I won't have my pre until the third week of February.
Current setup:
Zu Essence
Manley 300B SE/PP monoblocks (11 wpc SET; 24wpc PP); SET at 0-2dB negative feedback; PP at 1-3 dB negative feedback.
Sony ES receiver serving as a temporary pre-- being replaced with a Manley 300B pre.
Sony HAR-D1000 cd
Zu Libtech speaker cable
Zu Gede interconnects to the amps
Zebra Cables custom interconnects from CD to pre
Zu Mother power cords
11 wpc in SET mode plays LOUD in my room 12*16*8. The sound is exceptionally liquid, dynamic, and three-dimensional. This should improve dramatically when I use a better pre, but it's pretty fantastic now.
I have also paired the Essence with the Sony ES Receiver, a Cambridge 340A integrated, and a Rega Elicit integrated. Best sound was obviously the Elicit, but the 340A put in a strong showing.
Some points about the Essence with tubes: the top-end is very balanced and well integrated with the FRD. The impedance of the ribbon tweeter seems to interact with the tube amp to shelve the response down slightly to better intergrate with the rest of the frequency spectrum. Bass is full and weighty. In-room response is in the high 20's in my room.
Some points about the Essence with solid-state: the 340A (roughly 40wpc) has more than enough power to be speedy and exceptionally dynamic. The Elicit has a little more headroom, but the difference in power and drive is not noticeable. The 340A is slightly more punchy at the expense of smoothness, lack of grain, and the flow of the Elcit. Overall, an amp with the characteristics of the Elicit is a better match in the solid-state world. Placement can be tricky with solid-state as I found the treble response to be a little "hot". I don't want to overstate this as it was easy to deal with, but others (in the Zu camp) have different opinions on the magnitude of this issue. I found it easy to compensate for this by using different interconnects and speaker cables (annealed copper) from Zebra cables. This smoothed the response nicely. In addition, experimenting with toe-in so that the tweeter outputs cross behind the listening position on the midpoint of the rear wall smoothed this.
Overall, 11 SET wpc really lights up the Essence in my room. A small but noticeable difference from 24 PP wpc-- better grip in the bass, slightly more dynamic, slightly less liquid.
PMB
Current setup:
Zu Essence
Manley 300B SE/PP monoblocks (11 wpc SET; 24wpc PP); SET at 0-2dB negative feedback; PP at 1-3 dB negative feedback.
Sony ES receiver serving as a temporary pre-- being replaced with a Manley 300B pre.
Sony HAR-D1000 cd
Zu Libtech speaker cable
Zu Gede interconnects to the amps
Zebra Cables custom interconnects from CD to pre
Zu Mother power cords
11 wpc in SET mode plays LOUD in my room 12*16*8. The sound is exceptionally liquid, dynamic, and three-dimensional. This should improve dramatically when I use a better pre, but it's pretty fantastic now.
I have also paired the Essence with the Sony ES Receiver, a Cambridge 340A integrated, and a Rega Elicit integrated. Best sound was obviously the Elicit, but the 340A put in a strong showing.
Some points about the Essence with tubes: the top-end is very balanced and well integrated with the FRD. The impedance of the ribbon tweeter seems to interact with the tube amp to shelve the response down slightly to better intergrate with the rest of the frequency spectrum. Bass is full and weighty. In-room response is in the high 20's in my room.
Some points about the Essence with solid-state: the 340A (roughly 40wpc) has more than enough power to be speedy and exceptionally dynamic. The Elicit has a little more headroom, but the difference in power and drive is not noticeable. The 340A is slightly more punchy at the expense of smoothness, lack of grain, and the flow of the Elcit. Overall, an amp with the characteristics of the Elicit is a better match in the solid-state world. Placement can be tricky with solid-state as I found the treble response to be a little "hot". I don't want to overstate this as it was easy to deal with, but others (in the Zu camp) have different opinions on the magnitude of this issue. I found it easy to compensate for this by using different interconnects and speaker cables (annealed copper) from Zebra cables. This smoothed the response nicely. In addition, experimenting with toe-in so that the tweeter outputs cross behind the listening position on the midpoint of the rear wall smoothed this.
Overall, 11 SET wpc really lights up the Essence in my room. A small but noticeable difference from 24 PP wpc-- better grip in the bass, slightly more dynamic, slightly less liquid.
PMB