I can now report that the 801 has held its own in the following situations:
(1) Acoustic gig with vocals, acoustic guitar and cajon through PA, electric guitar into Blues Junior, uke bass into 801 (volume at 1 o'clock).
(2) Big band rehearsal in smallish function room - drums, saxes, clarinets, trumpets, trombones all unamplified, keys into small combo, vocals into small PA, Precision into 801 (volume at 2 o'clock).