SP-77を若干カスタムしてあります個体です
ノーマル機と比べると少し歪みが深いです。

チャンネルの切り替えは表面（写真の3枚目）のスイッチで手動で変えれます。

Alembic Club: FS: Soldano SP-77 series II preamp [SOLD]

Thunder Road Guitars - Used Soldano Series II Model SP 77 Rackmount Preamp #77258 (PDX)

Soldano SP-77 Juicy Metal Clip

Soldano ソルダーノ series 2 guitar preamp SP-77 - メルカリ

USED Soldano SP-77 Series II Preamp

Soldano SP-77 Preamp & Doom Stack : r/Guitar

Soldano SP77 Preamp - Vintage, Made in USA

Review: Soldano SP-77 Tube Guitar Preamp

Thunder Road Guitars - Used Soldano Series II Model SP 77 Rackmount Preamp #77258 (PDX)

Preamp - soldano SP77 - Japan

102KB"],"2001":[null,null,null,null,9,6,9],"2003":[null,"hT7oPYBlnbJx1M

File:Mesa Boogie Studio Preamp, Soldano SP-77 Preamp, Mesa 20-20 Power Amp.jpg - Wikimedia Commons

Soldano SP77 Serie II Preamp | Gas Music Store - Permute on line

SP-77 Series II (Made in USA) Soldano - Audiofanzine