ya, anyway 6i-300b is a higher level amp than M6(will do A-B test with Spark 300P soon), Mid and Bass much bettern than M6(and in here new 6i-300B about S$2.6K, M6 is 1K).quite happy at that price(bought at 1.3K).
In here, first hand MIC product quite expnesive (at least mark up 30% compared to china), but for second one, no more than 60% origanl price for a mint condition one. Quite funny!