ขอทราบราคาด้วยครับ ทั้งสองรุ่นมีข้อแตกต่างกันยังไงครับ 
รุ่น 8033c เหมาะสำหรับ Hometheater 8033s ชุดฟังเพลงที่ใช้ sub
Correction Range 16 - 144 Hz 16 - 144 Hz
Frequency Range 5 - 150 Hz 5 - 250 Hz
Input Connectors 1xRCA (mono) 2xRCA (stereo)
Power switch Manual Soft power on/off (no switch)
12 VDC power option No Yes
Gold-plated connectors No Yes
Features
* Measures and corrects the combined frequency response of your subwoofer system and the listening room
* User-friendly automatic calibration procedure
* Can be used with any active subwoofer
* Minimum phase filtering, no significant algorithm delay
* Correction range 16-144 Hz
* Three user-selectable additional equalization filters
* Single or multiple measurement point calibration
* Measurement microphone is included
* Ultra-compact enclosure: 126 mm x 80 mm x 28 mm (5" x 3.2" x 1.1")
* Low power consumption: 1.5 W
* RoHS directive compliant