Kronos AV
Kronos AV
The founder of Audiopax, Eduardo de Lima, began in audio in his teens with the production of his first loudspeakers and amplifiers, something that led him a few years later to design his first SET amplifier using a 300B tube. This achievement was, according to him, the main event of his career - the musicality and naturalness of that strange little amp exceeded all expectations, inspite of some limitations in the high and slow and poorly controlled bass (characteristics normally found in average 300B amplifiers) the midrange frequency band was simply magical. So, Eduardo de Lima spent the following years trying to explain and, mainly, control the elements that produce that magic, to achieve it without the limitations imposed by a single device.

Audiopax Maggiore M50 Class A MonoBlock Power Amps (Pair)
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  • Regular price £28,199.00
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See also – overview on Maggiore M100 & matching L50 Pre amplifier.

In 2015 Audiopax introduced two new products to the Maggiore line: the reference preamplifier Maggiore L50 and the new reference tube amplifier Maggiore M50. Both were presented at the Munich and Newport shows with rave reviews. Just after these events the Maggiore L50 won their second “Blue Moon Award” (the first one was for the Model 88), with great emphasis on the exclusive Timbre Lock® adjustment, which easily allows integration with any system and that resulted in it being described as “The guarantee against boredom preamp”.

Click on / see special features below:

Audiopax Timbre Lock® 

Audiopax IDS®:

Audiopax ASTAT®/MPS®

The basic design of every Audiopax tube amplifier is built around a revolutionary topology, which is, probably, the only major innovation in this category in at least the last five decades. They have developed an ingenious combination of independent amplification sections with subtle differences between them. This is achieved through the utilisation of slightly different output transformer configurations. It allows them to do what no other manufacturer, regardless of price, can do. They achieve a significant increase in final power for the tube employed, together with the creation of an “Ideal Audio Device” (as though they developed their own “dream audio tubes”). Not content just with emulating single-ended triode tube sound, they have effectively produced tube amplifiers, which have all the desirable qualities of SET’s without their limitations. In addition to that they’ve provided a way to control the distortion spectrum of the amplifier by means of their exclusive Timbre Lock® control. This allows a perfect match with any loudspeaker. The final result was to maximise the possible cancellation of the loudspeaker’s harmonic distortion. This concept was originally launched in 2001 with their 30W single-ended Class A1 Model 88 and has now been taken to the ultimate with the Maggiore line.

The exclusive Audiopax topology with two different and independent amplification sections within each mono block, initially utilised in their Model 88 amplifier, becomes even more effective with the increase to three or even six independent amplification sections. These provide greater power and control with even better tuning for a more perfect match with any loudspeaker. However this presents greater challenges in keeping the noise floor at the same low level and achieving the same “speed” as with a smaller number of amplifiers. This involved a major change to the topology when going from two to three or six amplifiers and this is the main difference between the Model 88 and the Maggiore M50 and Maggiore M100. So, the change from two independent amplifiers working together to three or six is not a simple question of adding amplifiers inside a chassis – they had to redesign several of their original circuits to match these new requirements. It is a challenge to associate low noise with speed in power supplies and this is exactly what they achieved with the new and redesigned power supplies of the Maggiore line. The same revision had to be made to the output transformers and this involves more than 30 different phases through in their production process.

Something in common for all models in the Maggiore line is the extreme care taken with the components, which are always selected from the best options in the high-end market. All our transformers and coils, from the main toroidal for the power supplies to the output transformers and load coils for the amplifiers and preamplifiers, are designed and made exclusively for our products. The best laminates and wires are selected after years of research and tests. Every resistor and capacitor is selected for its specific function; such as the tiny Vishay foil resistors for the input signals and a specific series of Nichicon and Clarity caps for their power supplies. They had also been using the best coupling caps in the world (such as V-cap CuTF or Duelund CAST-PIO Cu) for several years but decided to go even further, developing their unique and exclusive new series of copper capacitors for use in their equipment. These were produced in partnership with Jupiter Condensers, one of the main high-end audio capacitors manufacturers in the market and took them two years of continuous effort to get the best possible performance. Several of their components are treated with an exclusive duo-cryo process, again the result of years of experimentation and research in this area. All of their equipment has benefited from the results of research into materials that absorb vibration and today they are one of the few companies that use solid wood, carefully selected for each production line.

Revolutionary topologies associated with extensive use of R&D for the selection of all the parts, materials and processes used in our production makes the Maggiore line a true reference in the audio high end market.

The result was an entirely new musical experience that is unique and extremely difficult to explain (how to describe something that simultaneously combines the magic and the delicacy of single ended with an absolute control of all elements of the musical event – something that previously only existed in the best solid state amplifiers?). Here are some words from a professional musician when he heard for the first time the Maggiore M100:

“The Maggiore does not ring or as a valve, or as a transistor. Do not touch as anything. In fact, nothing touches such as Maggiore . It is pure and natural music, no concessions.” [Euclides Marques – violinist]

Maggiore M50

Single ended Topology: Class A1 (12TAA7 KT88)

Maximum output power: 50W RMS at 1KHz, 8 ohms (No Clipping)

Frequency Response:  15Hz to 90KHz

Signal to Noise ratio: > 100dB (A-weighted) Ref 100W

Gain: 23 dB

Input Impedance: 100K ohms

Input voltage: 127V – 240V

Dimensions: 34cm x 22cm x 44cm  (H x W x D)

Weight: 32kg each.

Finishes: Black anodised aluminum or natural.

We are still delivering orders as normal. When your order ships you will still receive tracking details. For UK shipments, Our couriers have procedures in place to ensure deliveries are arriving as quickly & safely as possible. Drivers can now sign for your parcels, however will notify you that they have arrived, in order to ensure you receive your parcel. Signing for the parcel has now been stopped temporally for hygiene reasons. Drivers are also working with customer instructions, so you can ask them to leave the parcel in a safe place (doorstep etc...) if you prefer not to come into direct contact with the driver.

Express Deliveries

Express Delivery is FREE on all orders over £50. Express Delivery offers delivery in 24-72 hours from time of purchase. We use premium couriers for this service, mainly DPD & Royal Mail. DPD will offer you a one hour window for delivery to make sure someone is at home, or you can reschedule the delivery if no one is around. 

Standard Deliveries

Here at Kronos AV, we have vast experience with e-commerce sales. Making sure that your parcel arrives undamaged is a huge priority for us. That’s why at Kronos AV, we only use premium couriers for all our orders. All our parcels are shipped with DPD or Royal Mail and are always sent Signed For to make sure it gets to the right person. 

If for any reason your parcel does arrived damaged, please get in touch, and we will be happy to get everything resolved for you. We are always on hand to help!


Delivery is FREE on all orders over £50. In order to offer FREE delivery to UK customers, we use several premium couriers to ensure your delivery arrives safe.

Most large orders (over 2kg) ship using DPD or DHL courier and smaller orders (under 2kg) by Royal Mail signed for services.

The most appropriate courier will be chosen for the items ordered to ensure the quickest possible delivery.

We can offer very generous trade in offers across the majority of our product range. 

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If you have any question, please feel free to call us on 03435236169 or email