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Description

Synthesis Roma 510AC - 80W Tube Integrated Amplifier | Hi-Fi Excellence Made in Italy

When Italian craftsmanship meets audio innovation, the Roma 510AC: a tube integrated amplifier that redefines the standards of home hi-fi. Every note becomes a sensory experience, every silence a promise of absolute sonic purity.

The Art of Modern Tube Amplification

The heart of Roma The 510AC resides in its 80 watts RMS per channel pentode push-pull configuration, built around hand-selected components. The input section uses a 12AX7/ECC83 dual triode, while the driver stage employs a 12BH7 as a phase splitter, culminating in a pair of powerful KT88/6550s for dynamic and detailed reproduction.

The innovative DC power supply system for the tube filaments eliminates hum to almost imperceptible levels, ensuring a signal-to-noise ratio exceeding 90dB. The custom output transformer, made of high-quality ferrosilicon, ensures a linear frequency response from 20Hz to 20kHz with only ±0,5dB of variation.

The mechanical construction of the chassis holds the power and output transformers in an extremely rigid structure, completely isolating the amplifier from unwanted vibrations that could compromise signal purity.

Transformative Listening Experience

Il Roma The 510AC doesn't just play music: it recreates it with an emotional fidelity that touches the listener's soul. The tube configuration provides the natural tonal quality and three-dimensional spatiality that only the finest tube amplifiers can offer.

Each instrument emerges from the mix with tangible physical presence, while the explosive dynamics of the 80 watts RMS effortlessly handles complex musical peaks. The KT88's characteristic harmonic distortion adds a sweetness and warmth that makes every listening session a moment of pure pleasure.

The 400mV RMS input sensitivity and 50kΩ impedance ensure optimal compatibility with any modern hi-fi source, from the most delicate MC cartridges to the latest generation DACs. The five line inputs allow complete management of a complex audio system.

Versatile Setup and Compatibility

The variable level pre-out transforms the Roma The 510AC is a reference preamplifier for bi-amped or powered subwoofer systems. The 4-8Ω speaker outputs are ideal for high-efficiency bookshelf speakers and demanding floorstanding speakers.

The sleek remote controls volume, mute and source selection with the refinement worthy of the series. ROMA. Independently adjustable bias for each power tube allows for custom sonic optimization.

Heritage SynthesisItalian Excellence since 1992

Synthesis represents over three decades of research in high-end tube amplification. Each Roma 510AC is hand-assembled in the heart of the Marche region, where artisan tradition and technological innovation blend to create unique sonic masterpieces.

The valves undergo a rigorous two-stage computer-controlled selection process, ensuring perfect pairings for balance and longevity. Gold-plated connectors and ceramic bushings ensure rust-free connections over time.

Roma 510AC vs Premium Competition

Compared to similar-priced tube amplifiers, the Roma The 510AC stands out for its exceptional power-to-refinement ratio. While many competitors sacrifice detail for raw power, Synthesis It maintains its timbre delicacy intact even at maximum volumes, surpassing much more expensive amplifiers in terms of emotional involvement.

FAQ - Frequently Asked Questions

Il Roma Is the 510AC suitable for tube hi-fi beginners? Absolutely yes. Despite the technical sophistication, the Roma The 510AC offers plug-and-play operation with simplified bias adjustments and an intuitive remote control, perfect for those new to tube amplification.

Which speakers do you recommend for optimal performance? Il Roma 510AC excels with 4-6Ω floorstanding speakers of medium-high efficiency (87dB+). Models such as Sonus Faber, KEF Reference or Monitor Audio Gold enhances the amplifier's tonal naturalness to the maximum.

How long do the valves take to warm up completely? The amplifier reaches 90% performance in 15 minutes, but we recommend 30-45 minutes for optimal sonic expression. The modaliStandby mode speeds up warm-up time for immediate listening.

Is it possible to replace the KT88s with other types of tubes? Yes the Roma The 510AC also accepts 6550, KT90, and KT120 pickups with bias adjustment. Each type offers slightly different sonic characteristics: 6550s for greater control, KT120s for explosive dynamics.

Which digital sources pair best with tube sound? Audiophile-class DACs such as Cambridge Audio DacMagic, Chord Qutest or Denafrips Ares perfectly complement the musical character of the Roma 510AC, balancing digital precision and analog warmth.

Specifications

Amplification type valve
Valves used 2x KT88 per channel, 1x 12AX7/ECC83 per channel, 1x 12BH7 per channel
RMS power per channel 80 W
Reference load 4-8 ohms
Analog inputs 5th line
Frequency response 20Hz-20kHz ±0,5dB
Rapporto S/N 90 dB
Harmonic Distortion (THD) 1%
Input impedance 50 kOhm
Line input sensitivity 400mV RMS
Dimensions (WxHxD) 410 x 210 x 420 mm
Weight 25 kg
Electricity consumption 300 W
Alimentazione 117/230/245V, 50/60Hz
country of origin Italy
Trim Black anodized aluminium

About the brand

Synthesis is an Italian brand based in Morrovalle, in the province of Macerata, in the Marche region. Founded in 1992 by Luigi Lorenzon, it specializes in the production of handcrafted tube integrated amplifiers, power amplifiers, preamplifiers, CD-DAC players, and high-end hi-fi systems. The name Synthesis reflects the company's philosophy of a perfect synthesis between Italian valve tradition and advanced technological research, with the motto "Art in Music" expressing the intent to blend technology, design, and musical passion. Synthesis They stand out for their elegant and distinctive Italian design which combines fine metal and lacquered wood with visible valves, and for the excellent construction quality which derives from the experience inherited from the FASEL, a company founded by Luigi Lorenzon's father in the 60s for the production of transformers for professional music amplifiers.

Clear up any doubts

Find out more on our blog

Tubes or Solid State: What Really Changes the Sound?

If you're about to buy your first Hi-Fi amplifier, you've probably stumbled upon the oldest debate in home audio: tubes or solid state? The internet is full of conflicting opinions, forums where discussions are held with almost religious fervor, reviews that…

The Basics: How Tubes and Transistors Work

An amplifier, whatever its technology, does one simple thing: it takes the weak signal coming from the source (turntable, streamer, CD player) and amplifies it enough to drive the speakers. How it does it changes everything.

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FAQ

Official reviews

5
Average rating
Based on 5 reviews
56 days ago

Excellent quality, warm, pleasant sound that never gets tiring. 80W per channel, plenty of power.

Sound quality rating
TerribleOttimo
Quality/price ratio evaluation
TerribleOttimo
Aesthetic evaluation and design
SlackExcellent
63 days ago

I wanted a tube amp. After a few months of research with the help of various AI models, I finally found the right model for me, with one of the best quality/price ratios. I wanted an Italian product with an almost artisanal appeal. I have absolutely nothing to say about the limitations of my hearing: I haven't heard anything above 9 kHz for a while now. I'm not capable of performing technical analysis, as I have perfect pitch and a true audiophile's ear. I like to hear music well, but I also like the aesthetics and charm of certain solutions: tubes with streamers. The idea of ​​tube amps is mainly due to the memory of warm sounds and old-world charm. However,oppo I have a small complaint: a buzzing sound when hot, presumably due to the vibration of the power supplies. I also complain that their customer service, when contacted informally by email, isn't particularly responsive: I'd recommend taking it to a service center. Before moving 25kg of amplifier, I'd like some more information, especially where the service center is located... I'd like to avoid shipping 25kg of amplifier. Maybe it's just my own "obsession." Otherwise, I'd recommend it.

Sound quality rating
TerribleOttimo
Quality/price ratio evaluation
TerribleOttimo
Aesthetic evaluation and design
SlackExcellent
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INTEGRATED TUBE AMPLIFIERS

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