I found two more options that look interesting:
https://www.cratersandfreighters.com/freight-shipping-solutions/?keyword_session_id=vt~adwords%7Ckt~freight%20companies%7Cmt~p%7Cta~192821986687&_vsrefdom=wordstream&gclid=CLWgw5-7zdYCFYuifgodH2wN2w
https://orangehub.schneider.com/?gclid=EAIaIQobChMI4drr07rN1gIVRmp-Ch219QPWEAAYAyAAEgJhh_D_BwE
One of these 3 freight contacts should be able to provide reasonable shipping rates for your amps. Please let us know.
https://www.cratersandfreighters.com/freight-shipping-solutions/?keyword_session_id=vt~adwords%7Ckt~freight%20companies%7Cmt~p%7Cta~192821986687&_vsrefdom=wordstream&gclid=CLWgw5-7zdYCFYuifgodH2wN2w
https://orangehub.schneider.com/?gclid=EAIaIQobChMI4drr07rN1gIVRmp-Ch219QPWEAAYAyAAEgJhh_D_BwE
One of these 3 freight contacts should be able to provide reasonable shipping rates for your amps. Please let us know.