To enjoy the music of the 50's and 70's.Stereo amplifier using germanium transistor

I want to make an amplifier that enjoys the sounds of the 50's and 70's! When I made AMP while being conscious of it, I came across the sound of a germanium transistor.

Anyway, it will be a fun sounding AMP.

Of course, with an inorganic digital amplifier, even if it is a hybrid, this fun will not come out!

We propose to those who want to enjoy listening to music.

Nostalgic parts and luxurious solid wood that are particular about the design! Easy-to-use size, timeless design, and ECO!

From ROCK to JAZZ to POPS, I want to enjoy the gorgeous sounds of those days with everyone.

Germanium transistor is used for the pre part

This AMP has a pre part and a power part, but a germanium transistor is used for the pre part.

What is a germanium transistor?

It is an early transistor that has been made since the 1950s. It got this name because it used germanium as the material. It was used as an element for radios and AMPs at that time, and was also diversified in cartridge manufacturers such as phono equalizers.

When you actually listen to it, it features a unique atmosphere and a gorgeous sound that can only be produced by germanium transistors.

After that, the silicon transistor, which is advantageous both in terms of price and production, is deprived of its position.

Even so, the gorgeous sound of germanium transistors is popular, and it is used as an element of effectors such as FUZZ of guitars.

Glass tube rocket type items such as Mullard and Philips are still popular and have become enthusiasts' favorite parts.

In making this AMP, we listened to the transistors and selected them by matching.

Glass tube rocket type Mullard / Philips OC139 for ROCK / JAZZ

VALVO AC181 is used for Natural / Sweet.

The power AMP section uses a Philips IC amplifier that has a reputation for analog sound.

For the power AMP section, he has selected a Philips IC amplifier with an analog taste, which has become a hot topic even among vacuum tube AMP enthusiasts.

This IC amplifier is from the 90's and can be manufactured compactly with few parts used.

Due to its compact size, it is difficult to combine parts, but this time, most of the parts are luxurious and Vintage.

It is now a popular IC amplifier that is becoming a premium price.

Anyway, a fun sound! And what is the sound quality evaluation in SHOP?

* Because it is a sample product, the characters are inlaid.

What is the standard for fun sounds? Is often asked.

The answer is simple.

A sound that makes your body react unintentionally when you are listening to music! Means. Legs, shoulders, fingers and arms, and humming! It is a sound that makes your body react naturally and your feelings.

I don't care about the details such as how the bass is and how the treble is.

When you eat delicious food, it's delicious! !! !! It's fun to feel! !! Do you feel that? Is the standard.

Customers actually listened to the prototype at Yoyogi SHOP. -It sounds like a very gentle vacuum tube.・ The vocals are very comfortable! You will not get tired even if you listen to it all day long because it will let you listen with the sound and facial expression that you want to listen to all day long.・ It's a fun AMP to listen to music!

Has been highly evaluated.

Fun sound! This is the sound that Vintage Join has been proposing for a long time.

The sound is handled by Kiyoto Mamoru, who is in charge of sound quality improvement articles in the MOOK book of Stereo magazine.

Stereo magazine MOOK book Luxman vacuum tube series

・ Pleasant sound!Healed by the sound of vacuum tubes-Luxman Harmonizer Kit

・ Roaring sound!The pleasure of tube amps-Luxman tube hybrid integrated amp kit

・ Receive radio waves!Vacuum Tube FM Tuner Luxman Vacuum Tube FM Tuner Kit

・ Final adjustment of sound Examination of vacuum tube graphic equalizer-Luxman vacuum tube graphic equalizer kit

・ The record awakens! EQ curve adjustment type vacuum tube phono equalizer Luxman vacuum tube phono equalizer kit

We are working on an article about improving the sound quality of.

US sound, UK sound, European sound! And we are proposing sound making that suits the country and software such as JAZZ / ROCK specifications and Classic specifications.

Recommended for people like this!

* Because it is a sample product, the characters are inlaid.

This AMP is not a high-end AMP.

Rather, it's an AMP for music lovers who want to enjoy the cheap and hot sounds of the 50's, 60's and 70's.

I want to listen to all the sources included in the sound source with an emphasis on decomposing power! I don't recommend it to people like that, and I don't recommend it to people who are low-pitched enthusiasts who have low-pitched sounds.

It is an AMP for people who want to enjoy music surrounded by the pleasant atmosphere peculiar to germanium transistors.

And the power is also one channel 15W AMP, so those who want to listen with a roaring sound!

It is also not suitable for playback with low efficiency speakers of 80 to 84db class.

The size is also compact, W228 x H148 x D200mm.

It is an AMP for those who want to enjoy music in a normal room in a normal home.

Sound that cannot be produced by a digital amplifier!

I also listen to various digital AMPs due to my work, and have been remodeling them.

The technological innovations in the last few years have been really great, and AMPs such as TV, car audio, and Bluetooth are almost becoming digital AMPs.

We are now in an era where we can easily produce more than 10 watts on a small board that does not have a heat sink.

Certainly amazing! But what about the sound?

The sense of speed, SN, dynamic range, etc. are certainly excellent in terms of data and sound, but it feels like an inorganic and mechanical sound.

Digital AMP Whether it is to eliminate the odor or to improve the appearance, I see items using vacuum tubes and OP amplifiers in the previous stage, but still, the inorganicity can not be removed and the sound is only mechanically amplified. I can hear it.

The biggest feature of this AMP is that it is not a sound that is excellent in terms of data, but a fun and pleasant sound.


 50〜70年代の音楽を楽しむために。ゲルマニウムトランジスタ使用のステレオアンプ

Performance is by no means good, but it's a fun sound.

Nostalgic design, simple to make, compact size!

* Because it is a sample product, the characters are inlaid.

The design of AMP is made as simple as possible so as not to get tired of it.

The selection of parts is lined up with a nostalgic design.

The more you stick to the sound making of AMP, the more you stick to it, and the more you make it, the higher the end sound will be and the sound will be fine, but away from the simple sound with musicality. It will be.

VintageJoin has been proposing AMPs that make the best use of the goodness of the material by simply finishing by selecting each part, without making as much as possible based on the sound of the monitor AMP for recording studios in Germany.

The size of this AMP is the same, and the size is W228 x H148 x D200mm, which is compact.

Vacuum tubes for the sound of those days! I think there are people who say that the vacuum tube AMP has a high voltage, many transformers, etc. He can not make it simple, and with the sound that vacuum tube enthusiasts admit, select a germanium transistor in the front stage and Philips in the power stage. We have selected an IC amplifier. No wasted power is required, so we have finished it in a compact size with the minimum number of parts.

Because of its simplicity, I was too particular about the parts and it was only sold for a limited time.

Not only germanium transistors but also other parts are selected with great care.

Sprague tantalum capacitors and ERO Vintage capacitors in the pre section

Siemens Vintage single track on the base

In the power section, a large aluminum heat sink ROE decoupling capacitor and Sprague or Siemens coupling capacitor

Volume is ALPS RK27 series

RCA terminal is made by Amtrans

We use a lot of first-class parts that are unthinkable in this price range.

And we will actually manufacture all the boards by hand wiring.

It is a very special AMP that cannot be made by a major manufacturer that uses analog parts and is made by an analog manufacturing method.

The wooden case is made by ACROGE FURNITURE, which is familiar in Stereo magazine.

ACROGE FURNITURE homepage

It is also a design feature of this AMP,

Solid wood body! It has important implications not only for design but also for sound quality.

And we ask ACROGE FURNITURE, who is familiar with Stereo magazine, for processing and production.

The craftsmen process and manufacture it while matching the grain of wood, starting from just pasting together.

On the planning page "Gaidou Speaker" by Mr. Kishi and Editor-in-Chief Y, we commented in each issue with advice from speaker masters.

There is such a connection, and this time I am overwhelmed, and I have had a special production at Mr. Kishi's workshop while having many meetings.

It is also a work of ACROGE FURNITURE, which is proud to be second to none in the processing of natural wood.

The solid brass legs and the black aluminum mesh on the air circulation port have a sophisticated design in every detail.

Since it is an AMP that is particular about it, we pay attention to the details.

The legs are made of solid brass, which is also the cornerstone of the design.

And black painted aluminum mesh etc. at the air circulation port

We are also particular about the design of the bottom, which is normally invisible.

Compact and simple connection method!

We propose a compact and simple connection.

Input is one system.・ Input from CD, NAS, DAC is input to L / R of RCA terminal. -For Bluetooth, use a receiver and input to the L / R of the RCA terminal. -In the case of analog, input from the output of the Phono equalizer, and in the case of built-in Phono, input it to the L / R of the RCA terminal as it is.

The output of the speaker is one stereo system. -For speakers, connect the L / R speaker cord to the terminal. It is compatible with banana plugs.

JAZZ / ROCK specifications

* Because it is a sample product, the characters are inlaid. The real thing is planned to have a hairline finish.

The pre part uses his Mullard / Philips OC139 black rocket glass tube, which is also an ultra-rare item of germanium transistor and a longing part.

This black rocket tube is characterized by a fat sound.

In addition, we use a lot of luxurious parts such as Sprague tantalum in the coupling capacitor.

The solid wood body uses luxury black walnut and features a unique wild sound.

The legs are made of solid brass.

Size: W228 x H148 x D200mm

Power: 15W x 2

Power supply: DC12V adapter

NORMAL / Sweet specifications

* Because it is a sample product, the characters are inlaid. The real thing is planned to have a hairline finish.

In the pre section, we have selected the natural sound AC181 from among the many germanium transistors.

Germanium transistors are characterized by a unique atmosphere and high-frequency distortion, but many of them have quirky sounds, and sometimes the source itself is different.

This AC181 is a germanium transistor that creates a pleasant atmosphere regardless of the source.

The solid wood body uses demon walnut, which is also selected by listening to various woods and has a natural sound.

The legs are made of solid brass.

Size: W228 x H148 x D200mm

Power: 15W x 2

Power supply: DC12V adapter

schedule

June 17th Project announcement started

August 2 Project ends

AMP department production and wooden case production started in August

Completed wooden case in mid-September

AMP assembly and delivery started from late September

Delivery is scheduled to end by the end of October

Production and tuning are handled by Vintage Audio specialty store "VintageJoin". You can also listen to it at the store.

Vintage Join proposes comfortable sounds and comfortable sound themes.

We have also produced many items that can be enjoyed simply and compactly.

In addition to selling at SHOP, information is disseminated through Stereo magazine, serialization in Analog magazine, and radio programs on MUSIC BIRD. We also host events such as record fairs, record appreciation events, and gramophone festivals where you can propose the fun of analog.

I think that music is fun to listen to, not something to listen to while doing a rough search like training.

You can enjoy listening to music by developing your strengths rather than looking for their weaknesses.

VintageJoin has been proposing such proposals in stores and serialized in magazines so that we can respond to various customer requests.

We are making it while actually listening to the customer's voice at the actual store.

If you would like to actually see and listen to it, please come to the store with the sound source such as the record or CD you want to listen to.

Due to the corona vortex, please contact us in advance and make a reservation when you come to the store.

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