MEASURES
-
Rails: +/- 24VDC under load
-
DC offset at speaker teminals: +/- 2mV
-
BIAS: 1.3A (0.61V on R13/R14)
-
Voltage gain: 10 (20dB)
-
THD+N (at 1 Watt into 8 Ohms at 1kHz): 0.08%
-
THD (at 1 Watt into 8 Ohms at 1kHz): 0.04%
MEASURES
-
Rails: +/- 24VDC under load
-
DC offset at speaker teminals: +/- 2mV
-
BIAS: 1.3A (0.61V on R13/R14)
-
Voltage gain: 10 (20dB)
-
THD+N (at 1 Watt into 8 Ohms at 1kHz): 0.08%
-
THD (at 1 Watt into 8 Ohms at 1kHz): 0.04%
NOTES
-
R7 changed to 52.3k to remove excess negative DC offset at the output of the amp
-
R4 changed to 8.2 Ohms and 220uF bipolar capacitor added to remove DC offset at Edcor input (pin 1)
-
Boards, Edcor transformers and MOSFETs from TeaBag
-
Harris IRFP9240 MOSFETs
-
Matched Toshiba JFETs from FET Audio
-
Dual mono implementation
-
2 x 250VA transformers from Toroidy - 230V primary, 2x18V secondary
-
8 x 22000uF KEMET PEH200 in power supply
-
Deluxe 4U chassis from Hi-Fi 2000
RESOURCES
-
Manual: First Watt M2
-
diyAudio: Official M2 schematic, M2 Clone boards with 120mm UMS spacing
-
Other: Edcor
Last update: 10.03.2019.
NOTES
-
R7 changed to 52.3k to remove excess negative DC offset at the output of the amp
-
R4 changed to 8.2 Ohms and 220uF bipolar capacitor added to remove DC offset at Edcor input (pin 1)
-
Boards, Edcor transformers and MOSFETs from TeaBag
-
Harris IRFP9240 MOSFETs
-
Matched Toshiba JFETs from FET Audio
-
Dual mono implementation
-
2 x 250VA transformers from Toroidy - 230V primary, 2x18V secondary
-
8 x 22000uF KEMET PEH200 in power supply
-
Deluxe 4U chassis from Hi-Fi 2000
RESOURCES
-
Manual: First Watt M2
-
diyAudio: Official M2 schematic, M2 Clone boards with 120mm UMS spacing
-
Other: Edcor
Last update: 10.03.2019.
Black Cat DAC
Digital to analogue converter based on Ian Canada's components:
-
Streaming solution based on Raspberry Pi 4B and FifoPi Q7 synchronous mode FIFO re-clocker
-
ES9038Q2M Dual Mono DAC
-
OPA861 fully balanced zero feedback I/V stage
-
Linear power supplies for Raspberry Pi featuring ultracapacitor conditioners
-
Pure ultracapacitor power supplies for FIFO re-clocker, DAC and I/V stage
-
SC-Pure 45/49MHz clocks
NOTES
-
Pesante 3U chassis from Hi-Fi 2000 with customised front and rear panels
-
Supreme Audio toroidal transformer from Toroidy - 190VA, 230V primary, 4x9V (4A) and 2x6V (3.5A) secondary
-
5 inch DSI display IPS 800*480 touch screen
-
Volumio software
LINKS
-
Twisted Pear Audio: Buffalo-IIIsePRO DAC, Manual
-
Ian Canada: Document Download, Store
-
diyAudio forum: Introducing the Buffalo III-SE-Pro 9028/9038, Asynchronous I2S FIFO project, an ultimate weapon to fight the jitter
-
Various: Lampizator, SABRE Audiophile DACs,
Last update: 28.04.2024.