[en] What performance can be expected for dedicated detectors was the main theme of discussion in this subgroup. In the case of dedicated detectors, it is possible to consider the requirement for a specific physics issue and neglect others. Therefore, single purpose detectors can be designed so that they have an ability to take clear data with good resolution, good S/N ratio and considerably low systematic error. In the TRISTAN energy range, the event rate of interesting process is estimated to be low, and the background level may be high. In order to obtain the significant signals of a rare process, excellent dedicated detectors are required. A brief survey of typical detectors was carried out. For example, toponium and Higgs physics require the good resolution of gamma detection. In the case of low energy gamma measurement, bismuth germanate seems to be a best shower material for electromagnetic calorimeters. Lead glass is often used for high energy gamma measurement because of the good energy resolution, and scintillation glass may be a detector for medium energy gamma. For accurate decay vertex measurement, solid state detector hodoscopes will be available. Compact BGO balls, huge water balls, magnetized iron boxes and modified MAC detectors are proposed for their special purposes. (Kako, I.)