A solid Gong with, in my opinion, very good sound. The terminals are a bit small, but with a small phase tester that's no problem. Battery change is carried out quickly through the hinged lid. I bought this Gong, because the old Grothe Gong has given up the "spirit" after 12 years, and have the Purchase not regret it. The negative versions of my "previous speakers" I can understand, but not understand, because the test tone on the Grothe Homepage yes does not come from Grothe, but out of my speakers, and as the sound of the gong is better than the test tones.