Circle Labs M200

The M200 is a stereo power amplifier with the ability to operate like a monoblock in fully balanced mode. ecc88 triodes coupled through Supreme Silver/Gold/Oil capacitors are responsible for the voltage gain. The power stages use the company's Circle Power circuit made for high power and current applications. The sound of single-ended amplifiers, is combined with the dynamics and bass control of solid-state amplifiers.

The M200 is a stereo amplifier with 160W/8ohm and 300W/4ohm. M200. It can operate as a fully balanced monoblock with a power output of 600W/8ohm and 930W/4ohm. The voltage gain circuit uses an ecc88 triode, additionally subjected to careful selection. The pre-stage uses fixed polarity, so that it consists of only one tube, one resistor and one top-grade Mundorf silver-gold signal capacitor. This solution makes it possible to combine the shortest signal path with the best possible performance. Circle Power's current stages are the closest to SE amplifier topologies while maintaining high efficiency and power. The detail and timbre characteristic of SE amplifiers is combined with the bass control of high-performance amplifiers. The current stages of the M200 use multiplied the most high-current bipolar transistors manufactured by Sanken. This gives the amplifier even more dynamics and speaker control, as well as an ultra-wide frequency response. The power amplifier is built in dual-mono topology, and the power supply is based on transformers with a total power of 850W. The toroidal transformers are separate for each channel and are specially made to our specifications, with premium materials. The tube preamp section uses a separate copper-shielded transformer on an EI core and completely independent power supply paths for both channels. The power supplies of the power amplifiers use special 200,000 µF capacitors adapted for high currents. Nextgen series WBT sockets are responsible for feeding the signal to the speakers.