TOPPING PA3s Power Amplifier MA12070 * 2 Class D Full Balance Single End AMP 80W * 2 RCA TRS Power Amplifier (Silver) & iFi audio ZEN DAC Signature V2 4.4mm Balanced Output DSD256 / PCM384 Compatible USB-DAC [Domestic Genuine] gotor 4.4MM ⇔ 6.35mmx2 Speaker / Microphone / Audio Cable 4.4MM Balance to 6.35mm TRS Fan Replacement Cable Balance Cable 0.75M OR 1.0M Comment: These two products have the best sound quality when connected in a balanced manner.

When the above products are connected in a balanced manner, the subwoofer pre-out can be connected to the pre-out terminal of the ZEN DAC V2.

ZEN DAC V2 replaces the preamplifier. The volume can be adjusted with ZEN DAC V2.

We have prepared two types of balanced cables, 0.75m and 1m.

I hope you can choose one of them.