Integrated Headphone amp with moving coil phono stage

Hi OP

This may be $$$ but the Mark and Levinson No 523 has the phono pre-amp. headphone driver and quite possibly the balance control you all needed

If this fits what you need, please check this out.

Mark Levinson #523: 6-input dual mono Pre-amplifier - Stereocheck

you need to clarify certain details with seller, many functions are via remote/menu, not sure if balance is available via the menu

"BUILT-IN ANALOG PREAMP: Line level input or Phono M/M, M/C input, relay controlled."

https://www.canuckaudiomart.com/details/650234493-brooklyn-dac-dac-preamp-headphone-amp-and-phono-stage/

asking $850 CAd = $615. USD

different listing, here, may learn from it, BBII, a lot more money

https://www.audiogon.com/listings/lisbej5f-mytek-brooklyn-bridge-ii-all-in-one-roon-core-streamer-dac-headphone-phono-preamp-e-da-converters?refsource=hifishark

clearaudio smart phono v2 :phono mm, mc, headphone, volume, I do not see balance

https://reverb.com/item/85580223-clearaudio-smart-phono-v2-phono-preamp-headphone-amp-black-open-box-special?utm_source=aw&utm_medium=affiliate&utm_campaign=https%3A%2F%2Fwww.hifishark.com&sv1=affiliate&sv_campaign_id=536903&awc=67144_1755913099_b14d2ed2cde6fd70099f05db38d77adf

https://clearaudio.de/en/products/electronics-smart_phono_v2.php

how important is balance? (please clarify, you meant L/R not xlr)