Magnet: AlNiCo V
String Spacing:All 50mm
Resistance: Neck 8.15K, Bridge 8.5K
498R : designed for the Neck position, uses Alnico V magnets
498T: designed for the bridge position, uses Alnico V magnets
Hence, the pairings you’ll often see are 490R/498T.
The 498T pickup has a higher output compared to the 490T. The 498T has more upper-mids which gives it a punchier tone compared to the 490T which sounds cleaner.
For metal and hard rock, the 498T is often selected due to its punchier and more aggressive tone, whilst the 490T is often considered more versatile due to its lower output vintage tone.