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Relatively rare and incredibly made integrated from Swiss company Soulution Audio.
Unique design with integrated display and phono section.
Comes complete with the original box, manual, and remote.
LIKE NEW CONDITION!
The amplifier external design is the work of Greutmann Bolzern Designstudio from Zurich. The design received the "red dot design award 2012 Best of the Best" in the category "Entertainment technology and cameras". It will not appeal to everyone. The amplifier is massive and does not look like an audio component. Its faceplate is almost empty, except for the volume control knob, display and three buttons. So is the rear panel. We control the amp with a small remote control unit included with all pre-amps and SACD players from that manufacturer.
The device has been designed in such a way as to constitute a compact, rigid unit. It consists of aluminum plates on the outside, huge radiators on the sides and various screens inside, separating different sections from each other. The whole sits on specially designed feet. They feature two aluminum discs with three steel balls inserted between them – similar to CeraPuc feet from Finite Elemente. I am in favor of a rigid connection between individual components, just like one of my masters, Mr. Ken Ishigura, the owner of Acoustic Revive who I met last November at the Audio Show 2012 in Warsaw. Engineers from Soulution apparently think likewise.
The interior is divided into three horizontal sections. The top two house the preamplifier and power amplifiers, and the largest bottom section is the power supply. The preamplifier is mounted on one large printed circuit board, including both voltage controllers as well as line and phono sections. The circuit is built on Analog Devices AD797 and Burr Brown OPA627 (phono section), and transistors and Burr Brown OPA 627 (line section). Relay switches are used to select the active input from whence the signal is sent to a very sophisticated volume control system. This fully discreet system uses high-precision, low-noise metal foil resistors switched by reed relays – the best components of that kind, sadly, very rarely seen. They can also be found in McIntosh and ASR. They guarantee a long service life. To avoid switching noise, the system has been paralleled by the classical Burr Brown PGA2320 resistor ladder. At the time of volume level change the Burr Brown is switched in the signal path and the discrete circuit is used to select volume level in the "background". Ultra-purist design but it makes sense.
The circuit is coupled via capacitors. A prototype had used Mundorf M-CAM MKP but in the unit I received they were bypassed with beautiful Mundorf M-Cap Supreme Silver/Gold/Oil, in other words, oil capacitors. Phono preamp section looks equally impressive: it employs Evox capacitors and more Mundorf MKP as coupling capacitors. Pre-amp power supply section is very complex. DC power is regulated in the bottom section of the device housing the switched-mode power supply but the final rectification, filtering and stabilization takes place on the preamplifier main PCB. The power supply section employs Mundorf M-Lytic AG+ capacitors and discrete voltage controllers on the ON transistors.
Power amplifier section is placed directly below. It is a fully solid-state dual-mono design. Unfortunately, I was unable to get to it so I do not know exactly how it is built. What is known is that it uses five pairs of bipolar transistors per channel in the current amplification stage.
The bottom section houses four huge 600 W cutting-edge switched-mode power supply units, capable of delivering 2400 W. It is divided into two parts – voltage regulation and rectification and filtering. It seems that the preamplifier has a separate power supply, additionally shielded. The manufacturer quotes a total of nine power supply units in the 530, optimized for their specific functions. The power supplies for digital and audio circuits are electrically isolated from each other by optocouplers and transformers.
The unit is designed and built to work and sound the same in 10, 20 or more years. No expense was spared on passive components. The amplifier uses proprietary solutions which the Soulution engineers are convinced of: switched-mode power supplies, deep local negative feedback, signal coupling via capacitors and an interesting volume control system. With the 530 we not only get outstanding sound but equally outstanding performance.
Our Testing Process for Amplifiers (Solid State) at SkyFi:
We start with a visual inspection of all internal components to make sure there are no signs of stress or aging. Capacitors are checked for telltale sings of bulging or leaking, resistors are checked for signs of overheating or cracking, and transistors are checked for signs of stress or damage.
We then power up the unit carefully and run a simple 1k sine wave while monitoring the output on an oscilloscope for signs of distortion or noise. Finally, we run the amplifier to its full rated power into the appropriate resistive load provided by our Sencore amplifier tester. If there is an issue, it will usually be noticeable at this point. If everything reads clean, we will often test for THD (Total Harmonic Distortion) measured by our Keithley distortion meter, and compare it against the original manufacturers specifications. The amplifier then remains powered on to "burn in" on our test bench for a few hours to make sure there are no heat related issues. If there are balanced inputs available they will be also be tested.
Final testing involves pushing actual music thorough the amplifier. We've learned over time that some issues are only noticeable to a trained ear while listening to familiar source material. Our test bench has reference vintage KEF speakers that we're very familiar with which quickly reveal any discrepancies. Some amplifiers will then move into our listening room where they are tested with our in-house reference speakers of choice.
Click here for a PDF copy of the Soulution Audio 530 INT / Integrated Amplifier Owner's Manual
220 – 240 V (50 – 60 Hz)
100 – 120 V (50 – 60 Hz)
< 0.5 W Standby
idle 150 W
max 1600 W
2 pairs Cu-terminal,
– 31 dB bis + 42 dB
125 W @ 8 Ω
250 W @ 4 Ω
500 W @ 2 Ω
> 5,000 W
Frequency response (– 3 dB)
0 – 800 kHz
THD + N
< 0.001% at 50 W @ 4 Ω
(20 Hz – 20 kHz)
< 0.005 % SMPTE
< 0.0006 CCIR
> 120 dB (5 W @ 1 kHz)
> 110 dB @ 1 kHz
> 10 000
Output current max
45 A (limited)
2 × balanced (XLR)
2 × unbalanced (RCA)
1 × Phono (RCA)
3 kΩ balanced (XLR)
3 kΩ unbalanced (RCA)
(W × H × D)
17.5" x 13.8 x 17.7
442 × 350 × 448 mm
approx. 82 lbs. / 40 kg
LINK (remote turn-on)
12 V control signal
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PURCHASING FROM SKYFI:
This item will be professionally packaged and insured for safe transit to your home unless you opt for local pickup from our shop. Please note that all local pickup items are only wrapped with industrial strength clear cling stretch wrap if the original manufacturer packaging is unavailable.
Local pickup is available in Glen Rock, NJ, just a half hour drive from Midtown Manhattan, with convenient parking near our building.
And if you’re looking to ship to Canada, simply follow this link to view and purchase this item. We ship to Canada via UPS Worldwide Expedited service and you’re responsible for any applicable import duties and taxes.
If we don’t have the original manufacture’s packaging, we use heavy duty double-ply corrugated boxes with custom made to your item Instapak expanding foam custom inserts. In many cases this has proven to be better than the original packaging! We also use high quality fiber reinforced tape to seal our packages. Lightweight items will be bubble wrapped and shipped in a high-quality box.
Click here for specifics on our specialized packing process that separates us from the rest.
NJ Residents or anyone picking up without a resale certificate will need to pay NJ Sales Tax.
Thanks for looking and be sure to call us at 201-879-0000 with any questions.
WHO WE ARE:
SkyFi Audio is a small startup business specializing in the purchase, reconditioning, and reselling of select high-end audio equipment. We only buy equipment the we admire and are passionate about. No mid-fi, no gimmicks, no junk.
Each piece of equipment is cosmetically restored and fully tested in our well-equipped lab by an engineer with 30+ years of experience in the HiFi world. If it does not meet or exceed the original manufactures specifications, it will not be sold. We are very selective about the equipment we purchase, focusing on mostly analog, high-build quality, American, and European built units.
Through our sister company which is an authorized dealer for McIntosh, Audio Research, Sonus Faber, ClearAudio, Pro-Ject Audio Systems, and Sony ES, we have access to OEM parts, service, and support. If you’re local and looking for new equipment from the above-mentioned manufacturers, please drop us a line as we can arrange both sales and professional installation in the tri-state area.
We do not accept or review any offers that do not go through the official Audiogon system. We have too many items for sale and it’s nearly impossible to keep track of offers outside of the official system. Please don’t message, email, or text any offers.
We prefer working through PayPal which allows you to use a credit card, bank transfer, and their special financing to spread out payments over six months. We do not charge extra for any PayPal fees if you purchase the item at the asking price. You can also send us a personal check (which will need to clear before shipping), certified check, money order, or bank wire transfer. International clients without access to PayPal should use a bank wire transfer.
If you’re picking up an item, we do not accept PayPal. You must pay in person with a certified check, bank check, or wire transfer. If you make a PayPal payment and are picking up the item, your PayPal payment will be returned.
TRADE IN POLICY:
We accept trade-ins of equal or lesser value under certain conditions. Simply click here to submit your gear for full consideration. We will only consider high-end equipment from mainstream manufacturers such as McIntosh, Mark Levinson, Audio Research, Krell, etc. and will typically pass on displays, projectors, receivers, dated surround processors, and mid-fi equipment of any type. We will offer a fair value for your equipment, but keep in mind we’re running a business and will need to be able to resell the equipment at a profit after investing a great deal of time and resources in testing, certifying, repairing, cleaning, and packaging the incoming equipment. If you’re looking for top dollar, we suggest selling direct on your own.
SELL US YOUR GEAR (Working or Broken):
We’ll also purchase your used or broken gear and arrange pickup if you’re in our local market. Simply click here to submit your gear for full consideration.
SCHEDULING AN APPOINTMENT:
We are currently operating from our shop inside our dedicated building in Glen Rock, NJ. You’re welcome to make an appointment if there’s a piece of equipment you’d like to see in operation before or after purchase. We have several well-equipped and dedicated listening areas, plus a dedicated listening studio with tons of equipment of all makes and models. We’re not a store, so please don’t make an appointment if you’re just curious as to how a speaker or piece of equipment sounds. In essence - no tire kickers please.
You can call or text 201-879-0000 with any questions or to schedule an appointment. We can also arrange to install, calibrate, and tune your newly purchased gear in your listening room if you’re local to our area. This is super useful when purchasing large speakers or heavy amplifiers. It’s also great for ensuring your new turntable is setup correctly in its final resting place.