A:Answer Hi MikeB,
The 600 Series are passive speakers. This means the require an amplifier to drive them. Phono pre-amps are extremely sensitive devices and because of this, we recommend a set-up where the phono stage is housed either within the turntable, or within the amplifier driving the speakers.
Here is a link to one of our many receivers with a phono stage built-in:
https://www.bestbuy.com/site/denon-avr-s660h-5-2-ch-avr-advanced-8k-upscaling-3d-audio-dolby-truehd-dtshd-master-amazon-alexa-black/6492424.p?skuId=6492424