Ua=440V Ia=135mA with adjustable stabilized fixed bias. OT is
"Bartolucci" custom design (P=40W/8Hz-80kHz Ra=2,4 kOhms Rsp=6 Ohms Idc=160mA/max). Inerstage transformer is my own design (Ratio 1:1, Lp=Ls~55H, Idc=30mA max.).
4 x GU-50 output, 2x100W RMS, anti-clipping optical compressor, transformer balanced inputs, 4,8,16 Ohm outputs. Very clean and transparent sound, 3-D sound stage. I like it!
It is a prototype. Amps can be ordered soon. Available in SF Bay Area to try. Especially with Magnepans that want power.
It is a prototype. Amps can be ordered soon. Available in SF Bay Area to try. Especially with Magnepans that want power.
Attachments
Looks good Dmitr, but can you explain what's what? Looks like a few power supplies with different amps, but what goes with what? What tubes are you using? Etc.
Looks good, BikerBod, nice layout and wiring. Where are the conversion components, e.g. the chip, clock, etc.?
Hi Carl, the PCB containing the digital components is within a die cast box on the top of the chassis. This was more to do with using the space I had available within the chassis wisely than anything else.
about amplifiers
the tantalic amplifier costs from above on other amplifier as on a support
at the tantalic amplifier the power unit on lamps 6d22. entrance lamps of ef-14.
tension on the anode 3c24 1400 of volts.
output power in a class A 6 of watts.
the second amplifier on a lamp gk-71. on an entrance there are lamps 6ж4 in the triode mode.
gk-71 works in the pentode mode in a class A with tension on the anode of 900 volts.
output power is 20 watts.
the tantalic amplifier costs from above on other amplifier as on a support
at the tantalic amplifier the power unit on lamps 6d22. entrance lamps of ef-14.
tension on the anode 3c24 1400 of volts.
output power in a class A 6 of watts.
the second amplifier on a lamp gk-71. on an entrance there are lamps 6ж4 in the triode mode.
gk-71 works in the pentode mode in a class A with tension on the anode of 900 volts.
output power is 20 watts.
DAC Cirrus Logic CS4397 Amanero Combo384 Module - USB class 2 to I2S 32bit and DSD
DAC Cirrus Logic CS4397
Amanero Combo384 Module - USB class 2 to I2S 32bit and DSD output Adapter
The output cascade is constructed on Telefunken EF-14 lamps, production Germany, 1942.
DAC Cirrus Logic CS4397
Amanero Combo384 Module - USB class 2 to I2S 32bit and DSD output Adapter
The output cascade is constructed on Telefunken EF-14 lamps, production Germany, 1942.
Attachments
In this dac there is no regulator. I did different dac options where regulators on cores of nano crystal iron and I put them between cs4397 and an output lamp.
It is better to put the regulator in front of the amplifier. I like my of nano crystal iron or I buy from Stevens and Billington.
