AMR Luna & PMC Fenestria @ Cornflake London

 

Soulnote A-3 Core

 

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Merason Mountain Line

 

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Dan D’Agostino Momentum Z

 

Taking the Lead

The new Momentum Z Monaural Amplifier marks the next stage in Dan D’Agostino Master Audio Systems relentless pursuit of musical perfection.

Introduced in celebration of the company’s fifteenth anniversary, it builds upon the core technologies that have defined our amplifiers—advanced circuit design, precision-machined enclosures, and extraordinary power delivery. The Momentum Z takes performance to an entirely new level of refinement and control.

Born from the same design philosophy that established the original Momentum series as a benchmark in high-end amplification, the Momentum Z generation advances every facet of the platform. Its unique power supply technology, the Kinetic Drive Regulator, keeps the amplifier immune to AC mains irregularities and the speaker interaction issues that commonly degrade the performance of conventional amplifier designs.

In addition to this proprietary innovation, every element of the Momentum Z has been reimagined, including the input stage topology, output stage circuitry, and an advanced software-based control system that optimizes the operation of every circuit group. Integrated within a newly refined thermal architecture, the Momentum Z delivers effortless dynamics, exceptional transparency, and a lifelike sense of musical scale.

Input Stage Highlights

The Momentum Z is the first D’Agostino amplifier to use a Junction Field-Effect Transistor (JFET) based input stage. At the very front end of an amplifier, where the delicate musical signal first enters the circuit, the choice of device is critical. JFETs excel in this role, offering ultra-high input impedance and exceptionally low noise, which together preserve every nuance of

the source signal. From a technical standpoint, JFETs operate in a manner that provides a smooth, linear transfer characteristic with natural load handling. This design minimizes distortion and ensures that micro-level musical details are passed into the amplification stages intact, without being masked or colored. The benefits are immediately clear: a quieter background that reveals subtle spatial cues, a more natural midrange presence that brings vocals and acoustic instruments to life, and a sense of openness that enhances the soundstage. By using JFETs in the input stage, the amplifier achieves a rare balance of technical precision and musical warmth, allowing recordings to be experienced with both accuracy and emotional impact.

Internet Connectivity

With an integrated RJ45 Ethernet connection, the Momentum Z provides a glimpse into the performance and service parameters the software-based control system is optimizing. Through any web browser, users can view amplifier performance data including operating voltages, temperature, bias, DC offset, 12V trigger status, and more—all continuously monitored and displayed on connected devices via their home network. The same dashboard also provides control over front panel display settings for a personalized user experience.

Design

A defining hallmark of Dan D’Agostino Master Audio Momentum amplifiers is the distinctive use of solid copper heat sinks, a choice driven equally by engineering performance and visual impact. With nearly twice the thermal conductivity of aluminum, copper draws heat away from the output devices more quickly and uniformly. Immediately striking is the new, advanced 5-axis machined copper heat sink design, each formed from a single 42 lb (19 kg) slab of copper billet. The highly efficient elliptical geometry significantly enhances cooling performance, ensuring that Momentum Z operates safely and reliably even at full power. This exceptional thermal efficiency not only improves long-term reliability and longevity, but also maintains optimal operating conditions for the amplifier’s critical circuitry, preserving sonic stability under the most demanding loads.

The Momentum Z features a Dual Domain Meter Display designed to echo the elegance of the Swiss watch, inspired analog meters found throughout the D’Agostino product line. The first domain is digital: in place of a passive meter face, Momentum Z employs a 3.5-inch high-resolution LCD that serves as both a power meter and a message display. The second domain is analog, where – true to D’Agostino tradition, power is indicated by the iconic meter wand, a defining visual and functional element of D’Agostino power amplifiers.

Specifications

Power Output

500 watts @ 8 Ω / 1,000 watts @ 4 Ω / 2,000 watts @ 2 Ω

Frequency Response

1 Hz to 200 kHz, -1 dB / 20 Hz to 20 kHz, +0.1 dB

Signal-to-Noise Ratio

>75 dB, A-weighted / >115 dB, unweighted

Gain

27dB

Distortion

0.1% @ 1 kHz, 250 W per channel @ 8Ω

Input Impedance

1 M Ω (Standard Input setting) 300 Ω (Z input setting)

 Output Impedance

<0.05 Ω, 20 Hz to 20 kHz

Output Voltage

190 V peak-to-peak

Output Current

60A peak-to-peak

Power Consumption

Standby 17 W / Idle 35 W / Maximum 2,000 W

Inputs

1 balanced XLR

Outputs

1 pair binding posts 

Dimensions (WHD)

13.5 x 5 x 20.5 in / 32 x 13 x 54 cm

Weight

100 lb / 45 kg

Finish

Silver or black

Stellavox IDEM

 

Stellavox is a prestigious company that carries a long history in Switzerland, which was founded by the exceptional Georges Quellet who is 96 years old now. In fact, Rolland Schellin from Berlin wrote a book about its history 25 years ago. 

 

Stephan Schertler, the current head of research and development will lead Stellavox to the next stage.  He and the Stellavox team will only develop innovative electronics.

In 2019, he was given the opportunity to develop a studio console and other pro audio devices for the newly founded Stellavox company in Mendrisio, Switzerland, leveraging on his immense researches on zero-feedback technology in the last 25 years.

He was graduated as an engineer in 1983 and attended the Jazz Conservatory for several years.  At 26, he decided to devote himself entirely to music and toured as a double bassist all over Europe as a key member of Franco d’Andrea Trio, playing mostly with Italian and American Jazz musicians.

Due to the absence of supreme quality bass microphones, he developed his own and subsequently got a patent on the invention of a new transducer principle.  Then he founded the Schertler company and began a life long journey on audio electronics development. 

Since 1998 he had been working on the realization of new circuit principles for all audio functions without negative feedback, seeking for the sound of utopia in his mind. 

 

He is the mastermind behind the IDEM mono amplifier, an original work of his own without any commercial orientation that spans a few decades.  They are physically small but immensely powerful with supreme transient response. They can challenge any big boy with ease. It game-changes the definition of transparency in an uncharted territory.  It is not the typical “Swiss” sound like Dartzeel and others in similar camp.

ALIENO Amplifier 150-120 LTD

 

Same characteristics of ALIENO 100, but ALIENO 150-120 can use the two most famous direct heating triode tubes at the user’s choice: the 300B to deliver 150 Watts per channel, or the 2A3 to deliver 120 Watts per channel.

In addition to the power supplied, this amplifier also modifies its sonic characteristics respecting the type of tube used.

A double display on the front panel shows the type of tube installed, to confirm to the user that ALIENO has simply and automatically adapted all the parameters for the chosen tubes, avoiding the need for external modifications or the use of any tools.

Optimal load impedance 2 – 8 Ohm. XLR and RCA input connectors.

Like all ALIENO amplifiers, the 150-120 also uses the proprietary LTD (Loudspeaker Tube Direct) technology, in pure Class A, OTL-OCL and totally absent negative feedback.

YS Sound YSS-998s

 

Eisteddfod 1841

 

-Transformer power: Max 3750VA

-Output power: Max 2200W at 4Ώ

-Response time: 2us

-Distortion: 0.008%

-Frequency response: 20Hz-20kHz

-28 selected high-quality transistors

-More than 60000uF power supply Capacity

-Dimensions (height x width x depth) 230 x 446 x 515 mm

-Net weight: 41.3 kg

Spatial Audio Lab Blackbird

 

Although notoriously difficult to drive, the 300B tubes give unmatched low distortion in the most critical location in the whole amplifier.

The trick with the 300B is that it demands a driver with both very low distortion and significant power into a high capacitance load. Most drivers fail at that task, leading to murky and colored sound. With a powerful enough (and linear!) driver, the full beauty and immediacy of the 300B is revealed.

Starting with the most linear tubes for each power range, we choose the most linear possible circuit: fully balanced, and transformer coupled at each stage. No power is wasted in load resistors, as in conventional Golden Age vacuum tube amplifiers. All of the power is made available to the following grids, not just a fraction. The audio signal goes straight from plate to grid, with no detours or side channels.

The signal path is copper, transformers, and vacuum tubes. Nothing else. No coupling caps, no dynamic loads, no phase splitters, no secondary paths, no feedback loops. Just a straight shot from input to output. And it sounds like it; the absence of secondary paths, and various types of signal processing like phase splitters, is immediately evident. You will hear it right away, on any type of music you prefer.

The power amplifiers have a special feature for balanced preamps like the Raven: they take advantage of the balanced, isolated signal and feed it directly to the matched 6SN7 input-tube grids. If a conventional preamp is used, there's a dedicated input transformer that isolates and balances the signal, but using a Raven preamp gives an end-to-end signal chain using fully balanced tubes, with each transformer coupled for maximum signal transfer, with no side chains, feedback, or dynamic loads. Nothing but copper, transformers, and vacuum tubes.

Specs

Input Tubes: (x1) 6SN7

Driver Tubes: (x2) KT88

Output Tubes: (x2) 300B

VR Tubes: (x2) VR105

Zero feedback, fully balanced design

Frequency Response: @2W 18Hz - 30kHz +/- 0.5dB@24W 26Hz - 30kHz +/- 0.5 dB

Power Output: 24W

Dimensions: 10” x 18.25” x 16.25” 53lbs

Inputs: XLR / RCA

3.5mm 12v Input Trigger

FM Acoustics P8

 

Soulution 717

 

A new and innovative amplifier topology is pushing the frequency bandwidth beyond 2MHz while reducing distortion and noise to benchmark setting low levels.

Four 600VA switched mode power supply modules with an impulse power rating of 2100VA each are directly connected to the power amplifier boards for lowest contact resistance and shortest signal path from the power supply to the loudspeaker binding post.

At its inputs the 717 power amplifier features the same innovative input stage as used for the 727 preamplifier.

 The 717 can be configured as stereo amplifier, dual mono amplifier or as bridged mono amplifier.

Alieno 150-120 LTD stereo amplifier

 

Alieno 150-120 LTD offers the possibility of using the two most famous direct heating tubes 300B and 2A3, to have 150 Watts per channel with the 300B, or 120 Watts/channel with the 2A3.

Besides the power delivered, this power amp also modifies its sonic characteristics in accordance with the kind of tube used.

A dual display on the front panel shows the kind of tube installed, to confirm to the user that Alieno has simply and automatically adjusted all the parameters for the chosen tube without having to make any external modifications or use any tool.

Lorenzo Audio Labs 211PP

 

Power Amp Monoblock 211PP

Lorenzo Audio Labs, in its tireless quest to raise the bar of sound reproduction to the highest level, presents its Lorenzo Audio 211PP monophonic tube amplifiers.

The state of the art 221PP amps are the best match for the Lorenzo Audio Labs loudspeakers as well as for lovers of the highest quality sound.

You are facing one of the best audio amplifiers that can be manufactured. Not only do they feature the best components, which we will detail later, but also a philosophy that accompanies us in all our products, reach the auditory perfection. Handcrafted manufacturing with the extensive use of Panzerholz wood, this type of wood is highly appreciated for its non-resonant properties and linearity across the entire audio range, combined with exquisite aesthetics using the finest woods, marquetry and meticulous high-gloss finish, making it a true work of art.

After years of testing and development, we have opted for a Push Pull configuration with direct-heated triodes, with the 211 tubes, providing the transparency and harmonic richness of a single ended but with unprecedented speed and attack, offering a powerful 55W with zero feedback. At the heart of this stage stands a double Core C amorphous output transformer weighing 12 kg, featuring the legendary 2A3 tube directing the 211 tubes through a phase shift interstage, accompanied by a series of state-of-the-art components, such as high-voltage MKP gel filtering capacitors with a lifespan of over 30,000 hours, and ultra-fast rectifiers. And to eliminate any residual noise, the filaments are equipped with over 140,000uF, all powered by a double power supply through two independent transformers for low and high voltage.

It is worth noting that all circuits are hand-soldered without printed circuit boards.

Specifications:

- All-tube, transformer-coupled, zero feedback, push-pull architecture - Tubes: 2 x 211, 1 x 2A3, 1 x 6E5P

- Frequency range: 15 Hz - 25 kHz +/- 1.0 dB

- Inputs: 1 x RCA

- Input sensitivity: 1.0 Volts Output 

- Rated power: 55W, 40W pure Class A

- Speaker impedance: 4ohm - 8ohm

- Dimensions: 51 x 66 x 50 cms. (width x depth x height) 

- Net Weight: 75 Kg.

Worldwide launch at High End Munich 2024, Hall 2 F12/H01.

AM Audio E-100R

 

Goldmund Telos 1800 Mono Power Amplifier

 

Goldmund introduces the Telos 1800 Mono Power Amplifier, a state-of-the-art audio device in terms of clarity, power, and precision for audiophiles.

The Telos 1800 reaches its zenith with a maximum power output of 420 Wrms at 8 Ω and 1% THD, boasting a low distortion level, achieving a THD+N < 0.05% at 30 Vrms.

Other key features include an output noise floor below 3 μV within the entire audio range, a 35 dB gain, 110 dB dynamic range, and a damping factor of 600 at 1kHz on 8 Ω.

The elegantly designed amplifier, available in traditional silver grey with customization options for the top left front ring, boasts a thicker, 12mm panel structure for improved mechanical grounding and vibration dispersion.

The Telos 1800, transcending conventional audio technology, will cater to your power cravings.

Suggested Retail Price: 70.000 CHF

Goldmund Telos 8800