Ortho No.1 Preamplifier & Headphone Amplifier

Finished two days ago, the test result seem very good to me. Especially the low frequency square wave.

To most of the testment below,

CH1=INPUT=1.6Vp-p

CH2=OUTPUT=16Vp-p

OUTPUT loader = 37.5 ohm

oscillograph : RIGOL DS1062C

source : DF1631

SIN

1MHz
100KHz

10KHz

1KHz

100Hz

10Hz

1Hz (with 300mV input 3V output )

SQU

1MHz

2Hz

0.08Hz

TRI

100KHz

100Hz

HAK_One

orthoaudio

This is a brand new day in my life.