HL2313   5 - 9V 3 x 2ch Inputs   

Loundness Function: √ SOP/DIP28    

TONE Control: Bass/Treble   Balance&Fader: √         

pin-to-pin compatible with PT2313

HL2314   6 - 10V 4 x 2ch Inputs  

Loundness Function: √ SOP, DIP28    

TONE Control: Bass/Treble   Balance&Fader: √         

pin-to-pin compatible with PT2314

HL2315   6 - 10V 1 x 2ch Inputs  

Loundness Function: √ SOP20     

TONE Control: Bass/Treble   Balance&Fader: √         

pin-to-pin compatible with PT2315

HL2322   6 - 9V 1 x 6ch Inputs   

Loundness Function: ---- SOP/DIP28

TONE Control: Bass/Middle/Treble       Balance&Fader: √         

pin-to-pin compatible with PT2322

Audio selector IC

HL2323   4. 5 - 9V 4 x 2ch, 1 x 6ch Inputs 1 x 6ch Output Channels SOP/DIP28 pin-to-pin compatible with PT2323