Toy 4 D/A with 6Dj8 buffer

High voltage Tube 6Z4

through R-C-L-C to 230V

Change 6DJ8 to E88CC

D/A module CS8416+WM8740 fix volume to buffer.

Volume control 

Toy 7 3-way speaker

High pass filter

Mid band pass filter



Low pass filter



Front View

Front view
Scan D2905/9900+Vifa D75mx-41-08+Sacn 25W8565-01 10''

Freqquency 2k~30k/500~2k/19~500 hz 89dB