Reference9.9

REFERENCE 9.9 Mono Block Power Amplifier

Consonance Reference 9.9 monoblock tube power amplifier R9.9 is the matching top of the range monoblock power amplifier for the R1.1. Similar to R1.1, the top uses cherry wood with large machined aluminum front plate. Each channel uses a direct heated triode Shuguang 845 for single-ended class A amplification. First stage goes through a Siemens 60s NOS E88CC and US 5687 NOS as the powerful driver stage to realize an output power of 28W, with no global negative feedback. Point to point wirings are used with Kimber high purity copper hook up wire. Resistors are Chinese military grade metal film. Signal coupling capacitors are from Rel-Cap/PPMF. R9.9 has very good driving power due to a strong power supply and well designed output transformer. The filament power supply and the high tension power supply are separated, using audio grade electrolytic capacitor and improved EI power transformer and choke for good power filtering and reserve. This enables good handling during dynamic swings in music. The driver stage unlike others does not use inter-stage transformer coupling or power tube. Instead the US 5687 NOS is selected to do this job with its adequate driving power and musicality. The advantage being reduction in distortion and greatly improves the purity of the delivered sound. At the center of the front panel Opera Audio uses a special power indicator tube 6E2. Apart from giving user an idea of the output power, it enhances the appearance of the unit when in operation.

Specification:

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: 0.6V
Input Impedance: 100k ohms
Output: 4, 8 ohms. User selectable.
Signal / Noise: 90dB
Consumption: 150 watt
Input Interfaces: 1 group ( RCA )
Vacuum Tube: NOS E88CC x 2, NOS 5687 x 2, 845 x 2
Dimensions: 470 ( L ) x 400 ( W ) x 200 ( H )mm x 2
Weight: 30kg x 2 ( net ); 35kg x 2 ( shipping )

RESOURCES

Looking for Adobe Reader?

powerby hifi-china.com