Name extras:
Enter the following names to start with the following bonuses:

Hachi - RPO +30 bonus

Iyoku - RFR +30 bonus

Mizupin - RIC +30 bonus

Montaka - RDK +30 bonus

Nindri - Dream Hat

Taicho - VIT +5 bonus

Vjum - Atlus Ring

Sound test:
At the Sega logo, press Up, Down, Up, Down, Left, Right, Left, Right, Up, Right, Down, Left. Now highlight any option, hold Start, and press A to get to the sound test.

Thanks to Revolution readers jimbob, fred12 and billabonger!