totti1965
Addicted to Fun and Learning
@amirm: perhaps it is time to take a look at their US$ 2,480 „fat boy“ -presumed SINAD is 82 dB - (according to LP-Magazin.de just 68 dB!!!) but it has a huge amount of power!
Translated via google from this German link:
lp-magazin.de
So it's happened. China has arrived in the high-end audio segment and is giving the established competition a run for their money. With the power amplifier under discussion here, I have, for the first time, a device on my table that ticks all the boxes for audiophiles and is available at an unrivaled price. The "About Us" page on the company's website reveals that Eversolo "is led by a team with extensive hi-fi industry experience." Interestingly, not a single one of the nine men pictured there is Chinese. The company is nevertheless based in Shenzhen, one of the high-tech centers of the Middle Kingdom. No one in our cultural circles had ever heard of Eversolo until last year or the year before, when various streamer models appeared and took the market by storm. These exceptionally well-built devices boast a comprehensive range of features and offer everything the modern digital audio fan could possibly need. We analogues look at such things with a semi-interested eye, but leave the intensive study to others.
Until now. Eversolo is now expanding its product range with two stereo power amplifiers, of which the larger AMP-F10 is clearly the more interesting. And so I stare, rather stunned, at a perfectly crafted, flawless high-end device weighing 18 kilograms net, offering plenty of power and stability at a list price of €2,580. Naturally, it comes with a wonderfully playful pair of dials in the extremely solid metal front panel. With all due respect: I don't know of anything comparable that could be purchased for even twice the price. At four times the money, we're slowly getting closer. The AMP-F10 is a very straightforward power amplifier with ample reserves in all important areas. It delivers a solid 180 watts into eight ohms and a good 300 watts into four ohms. Thanks to its luxuriously equipped output stage (ten large power transistors per channel), it can be easily operated in bridge mode, and according to the manufacturer, you'll get over 600 watts into eight ohms and 950 watts into four ohms. This is probably only a slight exaggeration, but I haven't tried it.
This device, even with its sophisticated design, largely dispenses with visible screws. The heatsinks thankfully have no sharp edges; everything about the machine appears well thought out. On the rear are balanced and unbalanced inputs (selectable via switch) and a pair of binding posts for the speaker connection. These, and this is one of the very few criticisms, are so cheaply made in China that they seem a bit out of place here. The input sensitivity is switchable, a toggle switch lets you choose between stereo and mono bridged operation, and there are options for signal-controlled power-on, which can also be done via control voltage. The package is complete, simple, and captivating. The instruments on the front are, of course, more decorative than genuine measuring instruments, but the 340 watts at four ohms as a zero-decibel headroom certainly make an impression. Power is switched on via the standby button on the front, and there's also a "real" power switch at the rear of the power input.
Inner values
Shall we take a look inside? Of course. Removing the cover plate turns out to be no small feat, but once you've found the small screws embedded in the sides of the heat sinks, it's quite easy. And anyone who thought Eversolo had blown their bolts on the pretty, high-quality exterior and that all they could come out of it now was a complete waste of time is seriously mistaken. The construction of the device is nothing short of a feast for the eyes and also a true statement in terms of effort.
Everything you need and a little more: the Eversolo from behind
The AMPF10 could actually be placed next to an unbeatable device from Japan in this regard, and it wouldn't have to hide – incredible at this price. I'd bet that Eversolo even paid attention to the color scheme of the components to achieve a harmonious overall appearance.
At the center of the action sits an impressive toroidal transformer. Wrapped in Mu-metal for shielding purposes, it is specified for a load capacity of 1000 VA and is pleasantly quiet in operation. The fact that Eversolo has built in a DC filter that eliminates any DC components from the mains right from the start may also be partly to blame. The transformer is flanked by two sets of four filter capacitors with a trustworthy capacity, which means we can already consider the "power supply" issue satisfactorily resolved. The input board directly on the rear panel houses a shielding metal box where the input amplification takes place. We don't know exactly what happens inside; the manufacturer is more of a general statement. However, we can assume a largely symmetrical arrangement. From there, it goes—and I've actually never seen this in a hi-fi device before—via properly terminated high-frequency cables with plugs and sockets to the two power amplifier boards mounted on the sides of the heatsinks. There, you'll find another mysterious metal box that distributes the signals between the two power amplifier branches. These consist of two sets of five MOSFETs connected in parallel, which leaves a pleasant feeling of reassuring over-dimensioning. Added to this are protective circuits against all kinds of misfortune, so you can sleep soundly in that regard as well.
Is the AMP F-10 a distinctly "audiophile" amplifier concept? Not necessarily. It's a generously dimensioned device with a relatively high level of negative feedback and a correspondingly high damping factor. The distortion level is correspondingly low, and the machine could easily be used for smaller sound reinforcement jobs. That's why I chose one of my approximately 45-year-old Yamaha P-2200s as my listening test opponent. These are in the same performance class and are famous examples of the old "iron pigs." Of course, they also have dial instruments, of course.
The sonic similarity between the two concepts is unmistakable. Both amps operate in a straightforward, unwavering, and agile manner. The Yamaha seems a bit more voluminous in the upper bass range than the Eversolo, which follows the path of virtue a bit more meticulously in this regard. Both amplifiers are undoubtedly designed for loudspeakers that demand the available power reserves, meaning: high-efficiency converters are not the solution of choice here. In the publishing house's listening room, I had excellent experiences with the PS Audio Aspen FR10, which sounded rich, robust, and harmonious with both amps. A clear recommendation for people who like things a bit rougher; I haven't had this much fun with the Truckfighters, the Swedish desert rock band who know how to get people out of their seats, in a long time. The opener, "Last Curfew," already impressively demonstrates where things are headed: the AMP-F10 places the brutally heavy guitar riffs in the room with incredible dynamics, peeling the guitar from the bigger picture with astonishing clarity (it does this better than the Yamaha), and practically nailing the listener to the arm of the sofa. Absolutely magnificent. The late Leonard Cohen probably represents the exact opposite of this requirement profile. Here, too, the AMP-F10 delivers a very tidy performance with a perfectly isolated voice. Anyone looking for a delicate, ethereal vocal reproduction will probably have to save up for an Air Tight amplifier; the Eversolo does it rather unspectacularly and straightforwardly, but definitely not wrong. This is an excellent amplifier for (almost) all situations.
Measured:
The Eversolo's measurements are also flawless. The perfectly linear frequency response extends to just below 100 kilohertz. The signal-to-noise ratio at one watt into eight ohms is a clean 90 decibels (A), the channel separation is excellent at 85.6 decibels (A), and the total harmonic distortion is 0.037 percent. At four ohms, the values remain virtually unchanged. The output power is 183 watts into eight ohms and 303 watts into four ohms, which is certainly more than enough. The relatively low power consumption of 85.7 watts at idle indicates that this speaker isn't operating with excessive quiescent current.
Translated via google from this German link:
Zeit zum warm Anziehen - Endverstärker Eversolo AMP-F10 | LP - Magazin
Erleben Sie fundierte Tests und Reviews aus der Welt der HiFi-Kultur. Ob Lautsprecher, Verstärker oder Plattenspieler – wir bieten Ihnen detaillierte Analysen, Klangtests und Expertenmeinungen zu den neuesten HiFi-Produkten. Entdecken Sie, wie Sie Ihr Sound-Erlebnis auf das nächste Level heben...
lp-magazin.de
Power amplifier Eversolo AMP-F10
Eversolo:So it's happened. China has arrived in the high-end audio segment and is giving the established competition a run for their money. With the power amplifier under discussion here, I have, for the first time, a device on my table that ticks all the boxes for audiophiles and is available at an unrivaled price. The "About Us" page on the company's website reveals that Eversolo "is led by a team with extensive hi-fi industry experience." Interestingly, not a single one of the nine men pictured there is Chinese. The company is nevertheless based in Shenzhen, one of the high-tech centers of the Middle Kingdom. No one in our cultural circles had ever heard of Eversolo until last year or the year before, when various streamer models appeared and took the market by storm. These exceptionally well-built devices boast a comprehensive range of features and offer everything the modern digital audio fan could possibly need. We analogues look at such things with a semi-interested eye, but leave the intensive study to others.
Until now. Eversolo is now expanding its product range with two stereo power amplifiers, of which the larger AMP-F10 is clearly the more interesting. And so I stare, rather stunned, at a perfectly crafted, flawless high-end device weighing 18 kilograms net, offering plenty of power and stability at a list price of €2,580. Naturally, it comes with a wonderfully playful pair of dials in the extremely solid metal front panel. With all due respect: I don't know of anything comparable that could be purchased for even twice the price. At four times the money, we're slowly getting closer. The AMP-F10 is a very straightforward power amplifier with ample reserves in all important areas. It delivers a solid 180 watts into eight ohms and a good 300 watts into four ohms. Thanks to its luxuriously equipped output stage (ten large power transistors per channel), it can be easily operated in bridge mode, and according to the manufacturer, you'll get over 600 watts into eight ohms and 950 watts into four ohms. This is probably only a slight exaggeration, but I haven't tried it.
This device, even with its sophisticated design, largely dispenses with visible screws. The heatsinks thankfully have no sharp edges; everything about the machine appears well thought out. On the rear are balanced and unbalanced inputs (selectable via switch) and a pair of binding posts for the speaker connection. These, and this is one of the very few criticisms, are so cheaply made in China that they seem a bit out of place here. The input sensitivity is switchable, a toggle switch lets you choose between stereo and mono bridged operation, and there are options for signal-controlled power-on, which can also be done via control voltage. The package is complete, simple, and captivating. The instruments on the front are, of course, more decorative than genuine measuring instruments, but the 340 watts at four ohms as a zero-decibel headroom certainly make an impression. Power is switched on via the standby button on the front, and there's also a "real" power switch at the rear of the power input.
Inner values
Shall we take a look inside? Of course. Removing the cover plate turns out to be no small feat, but once you've found the small screws embedded in the sides of the heat sinks, it's quite easy. And anyone who thought Eversolo had blown their bolts on the pretty, high-quality exterior and that all they could come out of it now was a complete waste of time is seriously mistaken. The construction of the device is nothing short of a feast for the eyes and also a true statement in terms of effort.
Everything you need and a little more: the Eversolo from behind
The AMPF10 could actually be placed next to an unbeatable device from Japan in this regard, and it wouldn't have to hide – incredible at this price. I'd bet that Eversolo even paid attention to the color scheme of the components to achieve a harmonious overall appearance.
At the center of the action sits an impressive toroidal transformer. Wrapped in Mu-metal for shielding purposes, it is specified for a load capacity of 1000 VA and is pleasantly quiet in operation. The fact that Eversolo has built in a DC filter that eliminates any DC components from the mains right from the start may also be partly to blame. The transformer is flanked by two sets of four filter capacitors with a trustworthy capacity, which means we can already consider the "power supply" issue satisfactorily resolved. The input board directly on the rear panel houses a shielding metal box where the input amplification takes place. We don't know exactly what happens inside; the manufacturer is more of a general statement. However, we can assume a largely symmetrical arrangement. From there, it goes—and I've actually never seen this in a hi-fi device before—via properly terminated high-frequency cables with plugs and sockets to the two power amplifier boards mounted on the sides of the heatsinks. There, you'll find another mysterious metal box that distributes the signals between the two power amplifier branches. These consist of two sets of five MOSFETs connected in parallel, which leaves a pleasant feeling of reassuring over-dimensioning. Added to this are protective circuits against all kinds of misfortune, so you can sleep soundly in that regard as well.
Is the AMP F-10 a distinctly "audiophile" amplifier concept? Not necessarily. It's a generously dimensioned device with a relatively high level of negative feedback and a correspondingly high damping factor. The distortion level is correspondingly low, and the machine could easily be used for smaller sound reinforcement jobs. That's why I chose one of my approximately 45-year-old Yamaha P-2200s as my listening test opponent. These are in the same performance class and are famous examples of the old "iron pigs." Of course, they also have dial instruments, of course.
The sonic similarity between the two concepts is unmistakable. Both amps operate in a straightforward, unwavering, and agile manner. The Yamaha seems a bit more voluminous in the upper bass range than the Eversolo, which follows the path of virtue a bit more meticulously in this regard. Both amplifiers are undoubtedly designed for loudspeakers that demand the available power reserves, meaning: high-efficiency converters are not the solution of choice here. In the publishing house's listening room, I had excellent experiences with the PS Audio Aspen FR10, which sounded rich, robust, and harmonious with both amps. A clear recommendation for people who like things a bit rougher; I haven't had this much fun with the Truckfighters, the Swedish desert rock band who know how to get people out of their seats, in a long time. The opener, "Last Curfew," already impressively demonstrates where things are headed: the AMP-F10 places the brutally heavy guitar riffs in the room with incredible dynamics, peeling the guitar from the bigger picture with astonishing clarity (it does this better than the Yamaha), and practically nailing the listener to the arm of the sofa. Absolutely magnificent. The late Leonard Cohen probably represents the exact opposite of this requirement profile. Here, too, the AMP-F10 delivers a very tidy performance with a perfectly isolated voice. Anyone looking for a delicate, ethereal vocal reproduction will probably have to save up for an Air Tight amplifier; the Eversolo does it rather unspectacularly and straightforwardly, but definitely not wrong. This is an excellent amplifier for (almost) all situations.
Measured:
The Eversolo's measurements are also flawless. The perfectly linear frequency response extends to just below 100 kilohertz. The signal-to-noise ratio at one watt into eight ohms is a clean 90 decibels (A), the channel separation is excellent at 85.6 decibels (A), and the total harmonic distortion is 0.037 percent. At four ohms, the values remain virtually unchanged. The output power is 183 watts into eight ohms and 303 watts into four ohms, which is certainly more than enough. The relatively low power consumption of 85.7 watts at idle indicates that this speaker isn't operating with excessive quiescent current.
|
| -68.63596 dB | | | 0.037 % |
| | | ||
| | | ||
| | | ||
| | | ||
Last edited:
You can get that kinda performance (SINAD and power) from pro poweramps for A TENTH of the money. 
