THEORY OF OPERATION
The Cyber-211 is a single-ended class A mono power
amplifier. It uses no global feedback. The 5687 is
a high mu dual triode, and acts as one tube with drive
stage. AC voltage applied to the input goes first
to the E88CC and then to the grid of the 5687. The
5687 provides voltage gain and drives the 211/845
output tube. The 211/845 is transformer-coupled to
the load. (In this case, the speaker.)
M y life has been filled with more than its fair share of audiophile exotica. Some days i thrive on the high value, low cost product that brings about countless hours of musical bliss. Other days i find myself saying, "Price be damned, i only want the very best!" The hard part is what is referred to as audiophile middle ground.
see more of this review...
W ow! That sums up the staggering amount of correspondence i have received concerning last month's Consonance Cyber 211 review . Have been feverishly answering many e-mails and felt that it was best to post a follow-up article so that everyone may see the common questions and answers. This is my, perhaps futile, attempt to reduce the onslaught of e-mail reaching my inbox. Also of note is that since the review Consonance has sent me a pair of Full Music Deluxe Edition 211 output tubes.see more of this review...
Specification for 211 output tube version:
Control Functions: Power
On/Off
Power Output: 16 watt, RMS 1kHz
Total Harmonic Distortion: less than 1% ( 10watt,
1kHz )
Frequency Response: 5Hz - 47kHz ( -3dB)
Input Sensitivity:
0.6V
Input Impedance: 100k ohms
Output: 4, 8 ohms. User selectable.
Signal/Noise: 90dB
Consumption: 150 watt x 2
Input Interfaces: 1 group ( RCA )
Vacuum Tube: NOS E88CC x 2, NOS 5687 x 2, 211 x
2
Dimensions: 450 (L) x300 (W) x400(H)mm x 2
Weight: 30kg x 2 ( packed )
Specification for 845 output tube version:
Control Functions: Power
On/Off
Power Output: 28 watt, RMS 1kHz
Total Harmonic Distortion: less than 1% ( 15watt,
1kHz )
Frequency Response: ( -3dB points at 15 watt ) 5Hz
- 47kHz
Input Sensitivity: 1V
Input Impedance: 100k ohms
Output: 4, 8 ohms. User selectable.
Signal/Noise: 90dB
Consumption: 150 watt x 2
Input Interfaces: 1 group ( RCA )
Vacuum Tube: NOS E88CC x 2, NOS 5687 x 2, 845 x
2
Dimensions: 450 (L) x300 (W) x400(H)mm x 2
Weight: 30kg x 2 ( packed ) |
Mono Block Power Amplifier
