Audio Refinement Complete 3 Piece Set, Integrated, CD and Tuner (YBA)

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General:
The brainchild of French audio designer Yves Bernard André of YBA, Audio Refinement is distributed in North America by Audio Plus Services.

The series is meant to offer quality-conscious pilgrims a no-compromise point of entry into the world of high-end performance, but at a reasonable price.

Three piece set from Audio Refinement including:
Complete Integrated Amp
Complete CD Player
Complete Tuner.

Great looking and sounding set, covering all bases. Perfect for an office or sitting room. A great value too.

Tested and working perfectly.

With manuals and original packing.

Cosmetic Notes:
- All three pieces show light cover wear from stacking
- The faceplate of the integrated amplifier has one small scratch near the volume knob, see pic
- All faceplatse show minor wear from normal use

Brand Background:
Audio Refinement HiFi is a renowned brand known for its commitment to delivering high-quality audio products with refined sound reproduction. With a focus on simplicity and audio purity, Audio Refinement HiFi designs and manufactures a range of amplifiers, preamplifiers, CD players, and other audio components that cater to audiophiles seeking exceptional musical experiences.

The company places great importance on meticulous engineering and superior craftsmanship, ensuring that each product meets the highest standards of performance and reliability. Audio Refinement HiFi products are designed to accurately reproduce music with transparency, detail, and dynamic range, allowing listeners to immerse themselves in the nuances of their favorite recordings. By combining innovative technologies and rigorous testing, Audio Refinement HiFi has earned a reputation for producing audio components that provide an engaging and captivating audio experience, making them a favored choice among music enthusiasts who value sonic excellence.

Ownership:
Unknown

Connections:
RCA inputs and pout-us on all units. 5 Way binding posts for speakers, removable IEC power cords.

General Sound:
Neutral sound with little to no coloration

Cosmetic Condition:
7/10 = Good. One or two minor scratches. Well Maintained.. See our detailed rating description here.

Working Condition:
Working perfectly and tested in our lab and listening room.

Included:
Unit, manual, and power cord.

Packing:
Original Manufacturers Packing

Reviews:
Click Here

Original MSRP:
$3,000.00

Recommended Cables:

Kimber Kable - RCA Interconnects - Better

Kimber Kable - Phono Interconnects - Better

Kimber Kable - Speaker Cables - Better

Kimber Kable - Power Cords - Better

Specs:

Description: Solid-state integrated amplifier.

Power output (both channels driven): 50Wpc into 8 ohms (17dBW), 90Wpc into 4 ohms (16.5dBW).

Frequency response: 10Hz–40kHz, ±3dB.

Total Harmonic Distortion: 20Hz–20kHz, ±0.02%.

S/N ratio: !w95dB (A-weighted).

Power consumption: 260W (full power).

Dimensions:
4.25" (105mm) H by 17.5" (442mm) W by 12.75" (320mm) D.

Weight:
19 lbs.

Approximate Age:
2007

The SkyFi Testing Process for Preamplifiers:

We start with a visual inspection of all internal components to make sure that there are no signs of heat stress or damage. Capacitors are checked for telltale signs of predictive failure including bulging, shrunken wrappers, or physical leakage. We also inspect the PCB’s for discoloration from resistors or transistors that may have been running hot. On vintage units we often spot check select capacitors for value and ESR.

When we first power on a preamplifier we connect its RCA output to a Sencore PA81 Power Analyzer which simulates real world loading conditions and gives us an oscilloscope interface. The first order of business is checking that the volume control works smoothly throughout its entire range with acceptable channel balance. This is accomplished by feeding a 1KHz sine wave into one of the preamp’s line level inputs while monitoring the preamp’s output on an oscilloscope. We then switch to a 1KHz square wave to test the tone controls, loudness function, and filters where applicable. During this step we are watching for equal alteration of the test signal by both channels. This also helps us identify dirty controls that will need treatment. Once the basic line stage functions are verified, we test each input individually. This is especially important for devices that use relays to select their sources. If the preamp is equipped with a phono stage we test that as well. We use an inverse RIAA filter which allows us to feed a reference test signal into the phono input with the proper RIAA equalization and level. A square wave or sine sweep is used to verify that the device’s phono stage is faithfully reproducing the RIAA curve. If the preamp under test has balanced inputs and/or outputs these are tested as well.

We finish up our bench testing with a listening test with our bench amplifier and reference speakers. During this test we check for hum or hiss that may not have shown up in earlier testing. We also check that all of the tone controls and filters perform as expected. If the preamplifier has remote control functions these are also tested. Preamps with tube circuits or complicated power supply topologies are connected at our long term test rig for extended stress testing under real world conditions.

The SkyFi Testing Process for Solid State Amplifiers:

We start with a visual inspection of all internal components to make sure that there are no signs of heat stress or damage. Capacitors are checked for telltale signs of predictive failure including bulging, shrunken wrappers, or physical leakage. We also inspect the PCBs for discoloration from resistors or transistors that may have been running hot. On vintage units we often spot check select capacitors for value and ESR.

If the amplifier passes visual inspection, we move on to a controlled power on sequence using a Sencore safety analyzer to monitor current draw in real time. Once the amplifier is determined to be safe to operate, we connect it to full AC mains for function and power testing. We connect the speaker outputs of the amplifier to a Sencore PA81 Power Analyzer which acts as a dummy load, DC offset monitor, and oscilloscope interface. We start with a low level 1KHz test signal at the amplifier’s input and slowly increase its amplitude while monitoring the output on an oscilloscope for signs of noise, clipping, distortion, or improper channel balance. We continue increasing the signal level until the amplifier reaches clipping. At this point we take an output power measurement and compare it to the spec sheet of the amplifier to verify proper performance. If the device under test has both balanced and single ended inputs they are both tested at this time. We finish off the bench evaluation with a 1KHz square wave check and a 20Hz to 20KHz sine sweep to assess the amplifier’s frequency response characteristics. This battery of tests will usually reveal if the amplifier has any issues that need further attention.

Before the device leaves the bench, we perform a listening test with actual music using a variety of preferred test tracks. Our benches are outfitted with familiar monitor speakers which help us identify inconsistencies that will not always show up on our test gear. The main things that we are listening for are hum or noise with no signal present, proper center image, clicks, pops, or any other obvious undesirable audio characteristics.

If the unit passes all of these tests it is moved to our long term testing rig where we simulate real word operating conditions for 6-8 hours. This allows us to monitor the unit for signs of thermal runaway or intermittent issues that only crop up when the unit has fully come up to temperature.