Yamaha THR vs Positive Grid Spark | Which One is Right for You?
45:05
The Spark 2 is Finally Here! - How Does it Compare to the Original?
15:25
YAMAHA THR30II vs Positive Grid Spark! - Which one is the Best Practice Amp?
11:32
5 Reasons Why the Yamaha THR is the Best Practice Amp
1:02:43
Positive Grid Spark 2 Review - 1 FULL HOUR WITH IT - THE REAL VERDICT!
14:06
Positive Grid Spark 2 Review
15:24
New & Improved? Checking Out The Positive Grid Spark 2
7:12
Spark 2 Amp: Room for Improvement!!
37:54