Fezz Audio Mira Ceti EVO Mk2 300B Integrated Amplifier

Description

Fezz Audio Mira Ceti EVO MK2 300B Integrated Amplifier

High-End 300B Single-Ended Class A Tube Amplifier | 2 x 8W | Toroidal Output Transformers | Automatic Bias | Made in Poland

The Fezz Audio Mira Ceti EVO MK2 300B Integrated Amplifier is a high-end Single-Ended vacuum tube amplifier designed for music lovers who appreciate the distinctive musical presentation of the legendary directly heated 300B triode.

Developed in Poland by Fezz Audio, the second-generation Mira Ceti combines a completely redesigned amplification circuit, upgraded signal path, custom toroidal output transformers and modern automatic tube management.

Delivering 2 x 8 watts of stereo output power, the Mira Ceti MK2 focuses on tonal refinement, expressive midrange reproduction and the intimate musical presentation associated with carefully engineered Single-Ended Class A amplification.

Featuring two 300B output tubes and three 6SN7 signal and driver tubes, the amplifier also introduces delayed anode voltage activation, automatic bias control and two expansion board slots.

Available from Chameleon Audio, the Fezz Mira Ceti MK2 is an attractive choice for audiophiles seeking an authentic 300B tube amplifier for a carefully matched high-efficiency loudspeaker system.

The Musical Character of the 300B Triode

The 300B is one of the most recognisable vacuum tubes in high-end audio.

Originally developed for demanding electronic applications, the directly heated 300B triode has become closely associated with specialist Single-Ended audio amplification.

Its continuing popularity reflects the distinctive design possibilities of a directly heated triode operated within a carefully developed audio circuit.

The Fezz Audio Mira Ceti EVO MK2 is intended to offer the tonal richness, natural vocal reproduction and expressive musical qualities that attract listeners to 300B amplifiers.

Fezz describes the new model as particularly rewarding with vocals, acoustic instruments, jazz and classical music, where subtle tonal variations and musical phrasing are especially important.

Single-Ended Class A Amplification

At the heart of the Mira Ceti MK2 is a traditional Single-Ended amplification architecture using one 300B power tube per channel.

Unlike a push-pull design, a Single-Ended amplifier employs an output stage in which the active output device handles the complete audio waveform.

This approach is valued by many tube enthusiasts for its relative circuit simplicity and distinctive harmonic behaviour.

The design requires carefully engineered output transformers and power supply circuitry to achieve its intended frequency response and distortion performance.

The Mira Ceti MK2 brings this traditional amplification approach together with Fezz Audio’s modern circuit development and automatic operating controls.

Two 300B Output Tubes

The Mira Ceti MK2 uses two directly heated 300B triodes, one for each stereo channel.

Each 300B operates within the amplifier’s Single-Ended output stage, working together with a dedicated output transformer to deliver power to the loudspeaker.

The amplifier’s rated output power is 8 watts per channel.

Although this is modest compared with conventional high-power transistor amplifiers, it can be an excellent choice for suitable loudspeakers and listening environments.

Speaker sensitivity, impedance behaviour, room size and desired listening level are particularly important when selecting a 300B amplifier.

Three 6SN7 Signal and Driver Tubes

The second-generation Mira Ceti features three 6SN7 vacuum tubes within its input and driver circuitry.

This updated tube complement distinguishes the MK2 from earlier versions of the Mira Ceti 300B.

The 6SN7 is a well-established dual-triode valve widely used in high-quality analogue audio circuits.

In the Mira Ceti MK2, the signal and driver sections are designed to provide the operating conditions required by the 300B power output stage.

Fezz has refined the signal path and component selection as part of the redesigned second-generation architecture.

Custom Toroidal Output Transformers

One of the defining engineering characteristics of the Fezz Mira Ceti 300B MK2 is its use of custom-designed toroidal output transformers.

Fezz Audio benefits from extensive transformer manufacturing expertise associated with Toroidy, a specialist Polish transformer manufacturer.

Output transformers are especially important in Single-Ended tube amplifiers because they provide the electrical interface between the high-impedance valve output stage and the connected loudspeaker.

The transformer design influences bandwidth, low-frequency behaviour and the amplifier’s ability to deliver its rated output into a suitable loudspeaker load.

The Mira Ceti MK2 combines its toroidal transformer technology with a revised circuit architecture intended to improve clarity, control and overall musical coherence.

Redesigned Amplification Circuit

The Mira Ceti MK2 is not simply a visual update of the earlier Evolution model.

Fezz Audio has introduced a redesigned circuit, upgraded signal path and refined selection of electronic components.

These changes are intended to enhance the amplifier’s transparency and consistency while preserving the sonic character associated with directly heated triodes.

The manufacturer highlights improvements in musical dynamics, tonal texture and soundstage presentation.

Delayed Anode Voltage Activation

The new Mira Ceti MK2 incorporates a delayed anode voltage activation system.

During initial power-up, vacuum tubes require time for their heaters to establish the appropriate operating temperature.

The delayed activation system manages the application of high voltage during start-up, according to the manufacturer’s circuit design.

This feature is intended to protect the valves during the warm-up sequence and support their long-term operating reliability.

Automatic Bias Control

The Fezz Audio Mira Ceti EVO MK2 includes automatic bias adjustment.

The circuit maintains the intended tube operating conditions without requiring routine manual bias adjustments by the user.

Automatic bias management makes the amplifier more convenient to own while supporting consistent performance as the valves operate.

Replacement tubes must still meet Fezz Audio’s requirements and should be installed according to the correct operating instructions.

Designed for High-Efficiency Loudspeakers

With its rated output of 2 x 8W, the Mira Ceti MK2 is best considered as part of a carefully matched audio system.

Loudspeakers with appropriate sensitivity and a relatively benign impedance characteristic are often natural candidates for low-power Single-Ended tube amplification.

The amplifier provides connections for compatible 4-ohm and 8-ohm loudspeakers.

However, the nominal impedance alone is not sufficient to determine whether a speaker is a good match.

For example, a loudspeaker with 92dB sensitivity may be easier to drive to satisfying listening levels than one rated at 85dB, although room size, impedance behaviour and listening distance also matter.

Chameleon Audio can help evaluate the Mira Ceti MK2 with your existing loudspeakers before purchase.

Three Analogue RCA Inputs

The Mira Ceti MK2 provides three RCA stereo line inputs for connecting compatible analogue sources.

Typical sources include:

• Digital-to-analogue converters
• Network streamers with analogue outputs
• CD players
• External phono preamplifiers

A turntable fitted with a conventional phono cartridge requires a suitable phono stage before connection to a normal line-level input.

Dedicated DIRECT Input

In addition to its three RCA line inputs, the Mira Ceti MK2 provides a DIRECT input.

This connection is intended for appropriate system integration using an external component with suitable signal-level control.

The manufacturer’s operating instructions should be followed when using this input.

Important: Confirm volume-control arrangements before connecting any source to a direct or bypass-type input, as inappropriate signal levels may result in excessive output volume.

Two Expansion Board Slots

The Mira Ceti MK2 includes two expansion board slots, allowing compatible optional functions to be added according to Fezz Audio’s available modules.

Depending on the current product options, supported extension boards may provide additional source connectivity or functionality.

Optional modules are not automatically included with the amplifier and must be ordered separately unless explicitly stated in the chosen configuration.

For module compatibility and available options, contact Chameleon Audio before ordering.

Classic Design with Modern Engineering

The Fezz Mira Ceti MK2 combines the visual identity of a traditional 300B tube amplifier with a modern, understated chassis.

The exposed valves, elegant front-panel controls and carefully proportioned enclosure make the amplifier a distinctive addition to a dedicated listening room.

Its published dimensions are 420 x 380 x 226mm, with a net weight of approximately 19kg.

The amplifier should be installed on a stable surface with adequate ventilation around the vacuum tubes.

What Makes the Mira Ceti MK2 Different?

The new generation introduces several important changes compared with the earlier Mira Ceti 300B Evolution.

• Redesigned amplification circuit and signal path
• Updated complement of 2 x 300B and 3 x 6SN7 tubes
• Delayed anode voltage activation
• Automatic bias management
• Three RCA line inputs and one DIRECT input
• Two extension board slots
• Updated published frequency response and distortion specifications

These changes make it important to distinguish the current MK2 from the previous Evolution model when comparing technical specifications, accessories or operating instructions.

Fezz Audio Mira Ceti EVO MK2 Key Features

• High-end stereo 300B integrated tube amplifier
• Single-Ended Class A amplifier architecture
• 2 x 8W maximum output power
• 2 x directly heated 300B output triodes
• 3 x 6SN7 signal and driver tubes
• Custom toroidal output transformers
• Completely redesigned MK2 circuit
• Refined analogue signal path
• Delayed anode voltage activation
• Automatic bias control
• 4Ω and 8Ω loudspeaker connections
• 3 x RCA stereo line inputs
• 1 x DIRECT input
• 2 expansion board slots
• Frequency response: 12Hz to 48kHz
• THD below 0.3% at rated output, 1kHz
• 150W power consumption
• 19kg chassis construction
• Designed and manufactured in Poland

Fezz Audio Mira Ceti EVO MK2 Technical Specifications

Specifications refer to the Fezz Mira Ceti MK2 300B integrated amplifier. The earlier Mira Ceti 300B Evolution and the Mira Ceti Mono Power Amplifier are different models with different specifications.

Official Fezz Audio Mira Ceti MK2 Information

For current product details, available finishes and access to the correct MK2 operating manual, visit the official Fezz Audio Mira Ceti MK2 product page.

Why Buy from Chameleon Audio?

At Chameleon Audio, we specialise in high-end audio components and carefully matched amplifier and loudspeaker systems.

Our team can help you evaluate the Mira Ceti MK2 with your existing loudspeakers, room size and preferred listening levels.

Free Worldwide Shipping with Full Transport Insurance

All brand-new products purchased from Chameleon Audio include FREE SHIPPING WITH FULL TRANSPORT INSURANCE.

Your new high-end tube amplifier is carefully packed and insured during transportation for additional peace of mind.

Best Price Guarantee – Extra 10% Below

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Frequently Asked Questions

What is the Fezz Audio Mira Ceti EVO MK2?

The Mira Ceti MK2 is a high-end stereo Single-Ended 300B integrated tube amplifier designed and manufactured by Fezz Audio in Poland.

How much power does the Mira Ceti MK2 produce?

The amplifier delivers a maximum rated output of 8 watts per channel.

Which tubes are used in the Mira Ceti MK2?

It uses two 300B output tubes and three 6SN7 signal and driver tubes.

Is the Mira Ceti MK2 a Class A amplifier?

Yes. Its Single-Ended 300B circuit belongs to the traditional Class A triode amplification approach.

Does the Mira Ceti MK2 require manual bias adjustment?

No routine manual adjustment is required because the amplifier incorporates an automatic bias system.

What is delayed anode voltage activation?

It is a start-up control feature that delays the application of high voltage during the tube warm-up sequence, according to the manufacturer’s circuit design.

What speakers work best with an 8W 300B amplifier?

Speakers with appropriate sensitivity, impedance behaviour and power requirements are generally preferred. Matching also depends on room size, listening distance and desired volume.

Can I connect 4-ohm or 8-ohm loudspeakers?

Yes. The amplifier provides connections for compatible 4Ω and 8Ω loudspeaker loads.

Does the Mira Ceti MK2 have a built-in DAC?

A DAC is not listed as standard equipment. A suitable external DAC can be connected to one of its RCA line inputs.

Can I connect a turntable directly?

A turntable normally requires an appropriate phono preamplifier before connection to a standard line-level input. Compatible optional expansion modules should be confirmed separately.

Does it have a DIRECT input?

Yes. The manufacturer specifies three RCA line inputs and one DIRECT input. Its proper use should follow the current MK2 operating manual.

Can I install optional expansion modules?

Yes. The Mira Ceti MK2 provides two expansion board slots for compatible Fezz Audio optional modules.

How is the Mira Ceti MK2 different from the earlier Evolution model?

The MK2 includes a redesigned circuit, three 6SN7 valves, delayed anode voltage activation and updated published technical specifications.

Is the Mira Ceti MK2 the same as the Mira Ceti Mono?

No. The MK2 is an 8W-per-channel stereo integrated amplifier, while the Mira Ceti Mono is a separate monoblock amplifier design.

Where can I buy the Fezz Audio Mira Ceti MK2?

The Fezz Audio Mira Ceti MK2 is available through Chameleon Audio with specialist advice on loudspeaker matching, tube amplifier installation and international delivery.

Explore Fezz Audio at Chameleon Audio

For a more powerful KT88 integrated amplifier, discover the Fezz Audio Titania EVO MK2.

For dedicated 300B monoblock amplification, explore the Fezz Audio Mira Ceti Mono Power Amplifier.

Browse more high-end audio equipment at Chameleon Audio.

Fezz Audio Mira Ceti EVO MK2 at Chameleon Audio

The Fezz Audio Mira Ceti EVO MK2 300B Integrated Amplifier brings together the musical appeal of directly heated triodes, a refined Single-Ended circuit, custom toroidal output transformers and practical automatic tube management.

For listeners with suitably matched loudspeakers, the Mira Ceti MK2 provides an opportunity to build a highly expressive stereo system around the distinctive characteristics of 300B amplification.

Contact Chameleon Audio for loudspeaker matching, available finishes, optional expansion modules, product availability and international delivery.

Fezz Audio Mira Ceti 300B at Chameleon Audio

The Fezz Audio Mira Ceti 300B combines classic single-ended triode amplification with the engineering improvements of the MK2 generation. At Chameleon Audio, we help music enthusiasts choose suitable loudspeakers and build carefully matched systems around this distinctive 300B integrated amplifier.