A200
The A200 is now Circle Labs' flagship integrated amplifier, featuring proprietary designs. A minimalist preamplifier based on the ECC88 tube is combined with a Circle Power technology transistor amplifier. The power stage provides adequate dynamics and good drive of most loudspeakers. The amplifier is equipped with a remote control.
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The A200 is a 120 W/8 ohm and 200 W/4 ohm design featuring a symmetrical Xlr input, three pairs of Rca line inputs and a pre out. The amplifier is built based on the topology - volume control - SE tube preamplifier - power amplifier with Circle Power technology. Volume control is implemented by a ladder of resistors from the renowned Khozmo company. The resistors, with a tolerance of 0.1%, are switched in it by high-end relays, which guarantees the highest possible precision and durability unavailable for traditional potentiometers. This control is equipped with a remote control. The single-stage preamplifier is built using a tube from the ECC88 family operating with fixed polarity. This solution allows the use of the smallest possible number of passive components. The circuit is built using a single tube, a resistor and a top-quality solid copper film signal capacitor, which directly translates into a neutral sound and dynamic command. This section uses separate tubes for each channel and stabilized power supplies with polypropylene capacitors. The Circle Power amplifier is a proprietary development by Circle Labs. Its sound is often described as "a combination of the best features of tube and solid-state designs." The stage uses an asymmetrical input stage and current-controlled bipolar final transistors. This solution combines the detail and precision characteristic of asymmetrical circuits with the efficiency and dynamics of symmetrical circuits. The low output impedance of the final stage, and thus the high damping factor, ensures adequate dynamics and good drive of most loudspeakers on the market. The power amplifiers are built in dual-mono technology with separate toroidal transformers and power supplies with a total capacitor capacity of 200,000 µF.

product specifications
Output power (RMS)
120W/8Ω, 200W/4Ω
Frequency response
10 Hz-130 kHz (- 3dB)
Input sensitivity
0.7V (full power)
Reinforcement
35 dB
Input impedance
33 kΩ
Dimensions (S x G x W)
430 x 376 x 176 mm
Net Weight
23 kg
Shipping scales
28.5 kg
Power consumption
Stand by
< 0,1W
On Const
70W
ON max
400W
Downloads
Reviews
Hifi Knights
Hifi Knights
The Circle Labs A200 has been designed to offer the listener an immersive, emotionally intense, uniquely musical experience. The music genre and quality of recording do not play an as significant role as with some more analytical, more revealing amplifiers, hence it's not a tool for a music producer, but rather one for those who want to enjoy music, experience emotions, relax, and smile while spending their free time with their favorite performers even if they didn't record their music for top labels.
High Fidelity
High Fidelity
"This is one of the best integrated amplifiers for reasonable money that I know of, and one of the best built and best looking audio devices regardless of price Bravo!" The A200 amplifier is awarded the RED Fingerprint distinction.
posi+ive feedback
posi+ive feedback
Choice Award, 2021 When listening, the minimalist preamplifier section, and proprietary Circle Power technology performs as a well-engineered piece of equipment should. Control, power, and extreme inner detail are all present as one would hear with a top-tier component, or should I say: components? The Circle Labs A200 truly sounds like a separate specialty line-stage and large power amplifier. It has a hint of romanticism, too, but most seem to enjoy music that airs on the side of romance since we do not listen to test signals. What else can I give than the highest recommendation to a piece that truly embodies the saying, "buy once, cry once."
pta
pta
Another powerful and feature-rich hybrid integrated amplifier from Europe, one of the few to arrive at PTA HQ this year, the A-200 stands out for its superb tonal balance and intuitive controls. Above all, this Polish company has achieved something rare in the world of "black box, two big knobs" integrated amplifiers - the A-200 is simply gorgeous in a brilliant but unobtrusive way.
Audio Video recommendation
Audio Video recommendation
AUDIO Video magazine, in its March 2021 issue, describes the Circle Labs A200 amplifier in an extensive article and includes its photo on its cover.
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Circle Labs A200 Integrated Amplifier - Thank You "The Polish-born Circle Labs A200 integrated amplifier is a real value in a sea of high-end integrated amplifiers. "
hificlass.
hificlass.
"The sonic coherence that this amplifier offers is simply delightful. Music is shown as a harmoniously harmonized whole. Nothing in the sound of this amplifier gets in the way, no sound is conveyed with over-interpretation, and yet we always have full insight into the musical content." "The A200 perfectly combines the magic of tube sound with the absolute control of every sound, typical of transistor end stages refined to perfection. This amplifier breathes life into almost any speaker. Thanks to its incredible sonic capabilities, we can build a great-sounding audio system based on the A200 that will meet our, even exorbitant, requirements."
SoundRebels
SoundRebels
"Fortunately, the Krakow integra, taking nothing for granted the complexity of the test and the breakneck melodic runs, played with surprising dynamics and resolution, not even for a moment forgetting about musicality, i.e. not only ensuring proper filling of contours, but also cohesiveness, coherence of the whole transmission. Thus, we received a full insight into the recording in tutti time, and the legibility of parts reproduced almost at the limit of audibility." "Circle Audio A200 not only looks like a thoroughbred high-end, but also plays with real class. Focusing on musicality and pleasure, it does not neglect resolution and dynamics, so it has a chance to appeal to a wide audience, which we sincerely wish it. We also hope that Circle Audio's portfolio will slowly expand and the Cracow brand will permanently establish itself on the market and in the consciousness of audiophiles and music lovers." Marcin Olszewski. "Music amplified with the help of the eponymous Circle Audio A200 was boiling with magic supported by saturation and beating warmth from every note." "Therefore, if I had to determine the percentage share of tube and solid-state technology in the presentation received in my room, without a doubt I would say that the result oscillates more or less 50/50 percent. In that case, why mix the two worlds when neither dominates? For the very simple reason of taking care of the listener's satisfaction through the consensus of the two technologies, i.e. giving the sound with energy and at the same time with cool intimacy, which the said amplifier does brilliantly. To this should be reminded of the phenomenal tangibility and building a 3D impression seasoned with well applied tube apparent sources. And also add information about the excellent impression of rendering the depth and width of the virtual stage." Jacek Pazio.
High Fidelity
High Fidelity
"With the A200, however, I heard something that happens every once in a while, though not that often at all: it's an intrinsically complex, rich sound in which nothing is missing, that largely repeats what I know from my system. And this shows once again that the best designers, quite independently and through different paths, come to similar conclusions about how an audio device should sound." "This is one of the best integrated amplifiers at a reasonable price I know of, and one of the best-built and best-looking audio devices regardless of price Bravo!" The A200 amplifier is awarded the RED Fingerprint distinction.
2020 AWARDS ACCORDING TO "HIGH FIDELITY"
2020 AWARDS ACCORDING TO "HIGH FIDELITY"
BEST PRODUCT 2020 "The Circle Labs A200 offers a real high-end sound that is as close to tube amplifiers, including SET type, as it is to the best solid-state equipment. There is both an openness to detail and a smoothness that allows the sounds to "flow" above all else. Dynamics are excellent, and bass response is exemplary at this price."