I use a 1/8" stereo cable to my Q105s from the second line output on my McIntosh C-15. I use this sub with a single Synaco ST-35 amp i have stored and upgraded. The St drives a pair of Sonus Faber Concertos. The vintage speaker taps on the ST-35 won't allow the neutrik cable very well, so i just went with the jack input. no difference to my ears. Love this little sub. Have a REL Stadium III for the HT system and SACD multichannel system.