試聴用スピーカー avant-garde UNO XD fino EDITION パワーアンプ AIR-TIGHT ATM-300R
感想 試聴 レビュー インプレッション review impression
※画像はネットから借用しました。L1にリモコンはありません。
Audible Illusions Modulus L1 vacuum tube preamplifier United States 1994 $1495-1995
One listen and you will be convinced that this is one of the best preamplifiers in the world.
The reproduced sound is full of high-resolution, accurate reality and warmth.
The sound has a high sense of freshness, with a sharp response to the source and crisp descriptive power,
There is a pleasant sense of hardness and sharpness that accentuates the contours of the sound.
The sound image has such a strong sense of substance that it gives the listener the illusion that the sound is being played right in front of their eyes.
The sense of localisation is clear and not flat,
The positional relationship of each orchestral part extends back and forth, left and right.
A sense of depth is reproduced. The brilliant piano touch is crisp and clear,
The touch of the brilliant piano is vivid and gives a sense of tremendous precision to the point of being hair-raising. Accents are effective.
The sound has strong contrasts, but the shading of the low-frequency tones has deepened,
Female vocals in particular have a noteworthy reproducibility, with a rich, meaty feel,
The vocals are warm and sensual, with a richness of expression that appeals to the listener's emotions,
The voices are smooth and fascinating. Powerful dynamics are presented,
The grandeur of the scale of the song, which is reminiscent of a planetary collision, will astonish you.
The sound is not as overly flamboyant as the ARC, though it has a more subdued and calm feel to it in comparison,
It is a very impressive preamplifier, and presented an outstanding acoustic performance.
In a word, it was a shocking encounter.
----- the level of difference from the other products.
And a unit with extremely high musicality - these are the first points I would like to emphasise.
The S/N ratio is also good, although not as good as the CAT, and the characteristics are of the highest rank for a modern tube preamplifier.
It has the characteristics of the highest grade of modern tube preamplifiers. The beautiful, luscious tone is full of brilliance and is the result of AI's unique acoustic theory and the use of the finest grade parts and build quality.
The top grade parts and build quality have taken the AI's sound to unprecedented heights.
It is one of the best I have auditioned over the years, regardless of price.
It is a robust product with never a single problem with the unit that I cannot fix myself.
It is also a product that all of its owners have raved about and lavished heartfelt and enthusiastic praise on.
When the power switch is pressed down, the power light turns from red to orange and the unit enters the warm-up state.
After a short time, the light changes to green and sound is produced. The mute button is to the left of the power button.
The likelihood of a malfunction is very low, but if something goes wrong,
If you have a problem, do not rush to switch off the L1 power button, but press the mute button and then switch off the power amplifier first.
Is the audible Illusions Modulus a 2-pin plug cable without a ground pin on the power cable?
If the power plug can be disassembled, remove the earth pin, or use a ground lifter.
If not used, hum will occur. The power supply unit is sensitive to installation, and a rubber ring should be fitted to the screws holding the aluminium chassis of the power supply unit.
It is necessary to use a device to suppress hum, such as a rubber ring fitted to the screw holding the aluminium chassis of the power supply unit and dumping it.
Two tube dampers per tube are used to suppress micnophonic noise.
Importantly, the positive and negative speaker cables should be connected in reverse, as they do not have a phase inversion circuit.
I hear that AI preamplifiers replace the vacuum tubes every year to 18 months,
The reason for this is that the vacuum tube heaters remain on when the pre-amplifier is switched off,
Considering the life of the vacuum tubes, it is better to unplug the power cable when not listening for a while.
AI founder and designer Art Ferris in the 1970s.
exporting classic Mcintosh and Marantz to Asia.
He was one of America's largest exporters. He had close ties to Japan.
AI introduced a preamplifier to the market in 1979 priced at only 300$,
when it debuted the 595$ Modulus pre-amplifier in 1985,
It created fierce competition with the more expensive equipment of the time.
Tens of thousands of AI units were sold to music lovers all over the world.
From time to time, it seems that aspiring philanthropists emerge in the West.
The Audible Illusions Modulus preamplifier is worth $50,000 as far as the sound is concerned,
Mr Art Ferris has been offering them for less than 2,000$ for 30 years.
He continued to offer the highest quality pre-amplifiers. As a result, AI has been around for many years.
remained a low-budget legend.
When the power switch is pressed down, the power light turns from red to orange and the unit enters the warm-up state.
After a short time, the light changes to green and sound is produced. The mute button is to the left of the power button.
The likelihood of a malfunction is very low, but if something goes wrong,
If you have a problem, do not rush to switch off the L1 power button, but press the mute button and then switch off the power amplifier first.
Is the audible Illusions Modulus a 2-pin plug cable without a ground pin on the power cable?
If the power plug can be disassembled, remove the earth pin, or use a ground lifter.
If not used, hum will occur. The power supply unit is sensitive to installation, and a rubber ring should be fitted to the screws holding the aluminium chassis of the power supply unit.
It is necessary to use a device to suppress hum, such as a rubber ring fitted to the screw holding the aluminium chassis of the power supply unit and dumping it.
Two tube dampers per tube are used to suppress micnophonic noise.
Importantly, the positive and negative speaker cables should be connected in reverse, as they do not have a phase inversion circuit.
I hear that AI preamplifiers replace the vacuum tubes every year to 18 months,
The reason for this is that the vacuum tube heaters remain on when the pre-amplifier is switched off,
Considering the life of the vacuum tubes, it is better to unplug the power cable when not listening for a while.
検索用 audio research SP-3 SP-6 SP-8 SP-10 SP-11 SP-14 SP-15
感想 試聴 レビュー review impression
audio research SP-9MK2 hybrid tube preamplifier 1990 United States
A very musical unit with a bright tone and a refreshing increase in freshness.
The clean, crisp sound was pleasant to let go of, while flaunting a determined hi-fi feel.
Good pinpoint sound image localisation and a three-dimensional spread of left, right, height and depth.
The S/N ratio is high, although the warmth has receded,
The sound is powerful and retains its former opulence and liveliness.
The high frequency range is a little hard and differs according to taste, but the FET (field-effect transistor) and the low frequency range are very well balanced.
This is a hybrid tube preamplifier consisting of a FET (field-effect transistor) and just one vacuum tube,
It has achieved a sound very similar to that of the SP-8. As Bill Johnson explains.
'to devise a hybrid design that was "better than the early tube units."
It is the culmination of numerous experiments with transistors and eventually FETs.
ARC's advanced design philosophy is a product of its product construction.
Only one vacuum tube is used for each line and phono stage.
In Bill Johnson's opinion, the miniature tube with the best sound quality is the 12AX7,
He believes that the best quality miniature tube is the 12AX7, and since good bulbs have become hard to find, the 6DJ8 is the best.
If the tubes are not carefully selected, you will be shocked by the very thin bass.
The recommended tube is the Amperex 6DJ8 bipolar tube, and for LRch amplification with a single tube, a bipolar match of +-10% or less should be used.
It is advisable to use a bulb within +/-10% of the bipolar match. Even if you use a carefully selected tube, the low frequency range is still insufficient,
A speaker with thick bass will maintain a good balance.
Compared to the CAT SL-1ULTIMATE, the resolution is inferior and the texture, although very subtle, is
It is a pity that the resolution is not as good as that of the CAT SL-1 ULTIMATE, and the texture is very subtle, but it can handle modern high-end speakers and power amplifiers well.
It has steadily inherited the high performance and charm of the important early ARC sound,
It has escaped obsolescence and still has a high value for money.
The chassis weighs only about half as much as the SP-8, although this is a clever cost-cutting measure,
The once problematic hefty noise, channel imbalance and distortion rate have been
The SP-8 has greatly reduced the handling complexity, specifically, the need to change balls over time, and the distortion rate.
The SP-8 has also greatly reduced the problems of handling, specifically the need to change balls when noise increases over time and the length of time it takes for the sound to come out. etc.
The sound resolution and focus problems have also been improved, making it a product that has evolved dramatically.
The audio research SP-9MK2 produces sound as soon as the power is switched on.
It is a strategic model that condenses the SP-11 (1985), a famous hybrid machine, into a single box,
It is highly popular worldwide and has sold more than 7,000 units in the series.
A great preamplifier with a dramatic and very impressive sound,
A problematic product that, despite its affordable price tag, can make many expensive, well-known works a thing of the past.
Legends reign supreme in the world. The majestic celestial sound is the most wonderful thing on earth.
The beautifully polished high frequencies and the beauty of the reproduced sound is incomparably sweet,
The beauty of the reproduced sound is incomparably sweet and evokes unprecedented emotions. Unparalleled, truly overwhelming musical enjoyment!
Bright, gorgeous brilliance and sparkle. The sound of heavenly paradise.
The ARC is an immortal milestone in the world of high-end audio in the USA,
ARC's exciting and glorious history. The popularity of the ARC in Europe and the USA is
very deep-rooted. Some have described the early ARCs as phenomenal gear,
I think it's incredible, truly astonishing and magical gear.
From the day I met it, I have been continually impressed by its magical mid and high frequencies.
The SP-8 renders a crisp, clear sound, with a certain grandeur,
wonderfully realistic, vibrant and emotional sounding.
Tight, tight bass, pounding and tremendous dynamics,
Bass slam. Solid, sharp edges that come on strong.
The ARC sound is pointillistic and fluffy, as if scattered with sound particles.
The soundstage spreads out, although the edges of the sound are sharply defined,
The edges of the sound are sharply defined, but there is a slight over-angularity. Vocals and instruments are unfocused,
HIGH DEFINITION" is printed on the first generation models.
Although printed on the first generation model, detail rendition is muffled.
American sound is rough around the edges, with poor localisation and soft focus,
detail ambiguity is a concern. The reproduction of recording sites is a weak point.
It is difficult to perceive the atmosphere and atmosphere of the place. The euphoric sound is unique,
Many people like it, but it masks certain aspects of the sound quality.
The special qualities of the audio research preamplifiers,
Very supple when the volume position is above a certain level,
The audio research pre's special quality is that when the volume position is above a certain level, the sound becomes very supple, smooth and lively. Conversely, when the volume drops below a certain level, it sounds non-linear.
the sound becomes non-linear. In other words, there is a threshold level,
When you go up from there, the sound becomes much more lively.
The ARC is designed to sound good at the volume position from 10 to 2 o'clock.
The impression is that the ARC is not suitable for any music genre, and the sound is very loud,
It has the disadvantage of being glaring, but it was created with synthesisers.
I would like to add that it is also outstanding at reproducing modern digital sounds.
The first ARC model, the famous audio research SP-3, sounds almost identical to the SP-8,
The audio research SP-3 or SP-10 is regarded as audio research's finest preamplifier.
The SP-8 is called the Baby SP-10 and is a one-box version of the SP-10 with no malfunctions.
The SP-3 is the American sound of the golden age, more elegant, brilliant and sparkling than the SP-8.
It is stronger than the SP-8. Violin strings and female vocals sound more lustrous and lovely.
There were more nuances of ambience that seemed to float in space, which I liked.
The SP-3 is ten years older, so it is less characteristic, but the sound is more vigorous in comparison,
The high frequencies are also more crisp than those of the SP-8. The high frequencies are also harsher than those of the SP-8 and cause pain in the ears.
In terms of characteristics, the SP-8 is a more normal evolution and you can choose the model you like after listening to the sound.
SP-10 The SP-11 is said to have broken down so badly that it has had to be repaired five or six times, so you should not buy it.
Even if you fix it, you can't rest assured forever, and the DC offset may even damage the power amplifier.
There is even a possibility of damaging the power amplifier by DC offset. In that case, a tube power amplifier would be used,
The output transformer will absorb the DC, so there will be no damage to the speakers.
In addition, a number of metal-can type ICs are used for the power supply voltage regulator,
They are not available and may even fall into the category of being unrepairable. It has all the charm of its peak years.
ARC pre's, except for the solid-state SP-5, SP-3 SP-6 SP-8 SP-10, you can't go wrong with any of them.
But from the SP-9 onwards, the resolution has improved, but it has become too analytical and the sound has become thinner,
The sound also became thinner, and even in the USA at the time of its launch there was a huge debate, with both sides of the argument being split down the middle.
The ARC (audio research corporation) at the time, which was intended to be used in combination with the SP-8, was a company that was responsible for the development of the SP-8.
The speakers for development were ACOUSTAT, APOGEE, THIEL, MAGNEPAN, INFINITY, DUNTECH and others with relatively low efficiency.
INFINITY, DUNTECH, etc., but ARC's SP-3, SP-8, SP-10, etc,
Very compatible with ALTEC and JBL speakers and ALTEC power amplifiers.
W480 x H134 x D260mm 10kg 1 pre-output system
William Z Johnson, founder of audio research, recent photograph, circa 1991.
I think the vacuum tube is the device with the best potential when it comes to music reproduction.
The bare characteristics are unmatched, the sound reproduction is incomparably sweet, but it is not the device used that counts.
However, it is not the device used that is important, but the way in which the device is ideally driven,
But it's not the device you use, it's how you use it that drives it ideally. That's why, for many years now, we've been using
I've been working on hybrid tube and solid state amplifiers for years."
