Source: Press Release, Last Accessed: 2018/07/13

The latest generation of the CAD-805, the CAD-805 Reference Series (RS), continues the single-ended mono block amplifier line that has been in production since 1993. The new CAD-805RS includes a bias meter on the front panel, offers both RCA and XLR input connectors and includes several new cosmetic upgrades. Internally, there are several changes to the circuit that significantly increase performance over the previous CAD-805AE.
Each monoblock features a pair 6SN7 tubes for the input stage, a 300B driver stage and offers the possibility to use either an 845 or a 211 output tube. According to the details published, the first 6SN7 stage is operating in a parallel dual triode conventional resistance-coupled Class A amplifier and is directly coupled to the next 6SN7 dual triode gain stage which is capacitor-coupled to the grid of the 300B driver stage. The 300B triode tube operates in a Class A single-ended mode utilizing fixed negative grid voltage on the 300B driver stage. This negative grid voltage is user-adjusted by a screwdriver pot at the rear of the amp. The 300B is directly coupled to the grid of either a 211 or 845, 100-watt plate dissipation, triode output tube. The method of coupling at this stage is called an interstage transformer. This is an air-gap design with a flat frequency response from 30Hz to 23 kHz. The audio signal from the 300B interstage transformer will drive the 211/845 output tube to 27 watts Class A output. With additional volume levels, the amplifier goes into a positive grid mode with a power output of 50 watts Class A2. In the case of the 211-output tube, the Class A2 power is around 70 watts at clipping. The high-power output from the 211/845 tube is coupled to the loudspeaker via an air-gapped 150 watt continuous duty output transformer. The amplifier offers 4,8 or 16 ohms taps to connect the loudspeaker.

For more information: https://www.caryaudio.com/

More News...