Recent content by Kageyuki Shikada
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Analog Squared Paper Discussion Thread.
Sorry. not yet. I'm currently making final adjustments at my desk. We hope to start selling by the end of September.- Kageyuki Shikada
- Post #3,807
- Forum: Portable Headphone Amps
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Analog Squared Paper Discussion Thread.
I recomend for TU05mk2 or TUR-08 Dita Perpetua : Low Z output IER-Z1R : Mid Z (TUR08's gain adjustment is stepless.) The discrete portable TR-17hp currently under development also has sufficient power. The TR series may also be an effective option if you value power and fatness of sound rather...- Kageyuki Shikada
- Post #3,806
- Forum: Portable Headphone Amps
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Analog Squared Paper Discussion Thread.
Thank you for your patronage! The TU-05's vacuum tube may be small for a flat drive type headphone. There is no problem with the final D8000, but the LCD series is difficult. The TUR-08 was designed to improve that. Especially in the case of BTL output, it is high power. It's difficult to put...- Kageyuki Shikada
- Post #3,803
- Forum: Portable Headphone Amps
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Analog Squared Paper Discussion Thread.
Thank you, I just shared on the Facebook page about the location of the gain trimmer. ;)- Kageyuki Shikada
- Post #3,796
- Forum: Portable Headphone Amps
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Analog Squared Paper Discussion Thread.
I used TDA1541A for this product. Since the parts are rare, in the new production, the ready-made R-2R DAC chip or FPGA is used to configure the R-2R ladder.- Kageyuki Shikada
- Post #3,794
- Forum: Portable Headphone Amps
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Analog Squared Paper Discussion Thread.
If you want a size of 07hp, you can do it with digital amplifier technology. I'm also experimenting with an amplifier that drives headphones such as HE6se using a housing like 07sp. (Adopts a large TO-3 CAN transistor in Class A) This may not be battery-powered from the standpoint of power...- Kageyuki Shikada
- Post #3,793
- Forum: Portable Headphone Amps
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Analog Squared Paper Discussion Thread.
Thanks for reply :) This is a voltage drive, not a current drive. VFETs (SIT) are used for voltage amplification.- Kageyuki Shikada
- Post #3,790
- Forum: Portable Headphone Amps
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Analog Squared Paper Discussion Thread.
Hello everyone! It's been a while since I've logged in. Well, this amp is a custom-built DACAMP, using a NosDAC TypeOne, a TR-. It looks like a combination of the best parts of the 07hp and TUR-06. The wireless part can be equipped with LDAC or AptX-HD wireless modules. The size is the same as...- Kageyuki Shikada
- Post #3,788
- Forum: Portable Headphone Amps
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Analog Squared Paper Discussion Thread.
Congrats! :3 And thank you.:snail: If you have any problems, please feel free to ask from the website. I will support you :)- Kageyuki Shikada
- Post #3,767
- Forum: Portable Headphone Amps
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Analog Squared Paper Discussion Thread.
- Kageyuki Shikada
- Post #3,766
- Forum: Portable Headphone Amps
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Analog Squared Paper Discussion Thread.
I am a designer of Analog2P. thank you for having interest. NOSDAC is slow rolled off up to 16kHz. However, it has been confirmed that when a 92 kHz PCM is inserted, it naturally appears up to 30 kHz. I am currently developing NOSDAC Type2. This will be the same size as TUR06, Equipped with...- Kageyuki Shikada
- Post #3,765
- Forum: Portable Headphone Amps
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Analog Squared Paper Discussion Thread.
Hi, Production of TUR - 08 has been delayed. (I'm sorry..) So, there are no customers who have it yet. I will complete it in January and ship it.- Kageyuki Shikada
- Post #3,738
- Forum: Portable Headphone Amps
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Analog Squared Paper Discussion Thread.
I think that TU05 may be good if you want enjoy the vacuum tubes sound. It is peculiar to the SP 1000's internal amp, but it's not a vacuum tube sound. (In my opinion, I think the vacuum tube amp is effective with a simple dynamic earphone / headphone.) Thanks for your consideration. ;)- Kageyuki Shikada
- Post #3,736
- Forum: Portable Headphone Amps
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Analog Squared Paper Discussion Thread.
Hi, Type 1 is support only Coaxial input. It can also be manufactured as optical input. (It is not very beautiful because it is a board mounted type connector.) The signal accepts 24 bits 96 Khz, Since TDA1543 is a 16-bit DAC element, the lower bits are truncated. Designed as an 07hp...- Kageyuki Shikada
- Post #3,732
- Forum: Portable Headphone Amps
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Analog Squared Paper Discussion Thread.
Hi, Thank you for question. TU - 05 does not cause hiss noise due to semiconductor. TUR - 06 also reduces the noise by lowering the internal gain. I recommend TU - 05 if you can tolerate the size. However, there is accidental noise from the vacuum tube. (Microphonics from vibration, and contact...- Kageyuki Shikada
- Post #3,730
- Forum: Portable Headphone Amps