MJ Radio and Experiment December 1986 issue Hobby

Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.

New Technology Analysis of Audio Fair / Audience test of 1.38cm4-way system / 2. Hi-FiAV Ko / 3. Production and installation example of sound absorbing panel / 4.6DJ8 4-ball preamplifier / 5. one point DC microphone / 6. Procedure of designing and construction of listening room