DIY microphone preamp project - VU meter driver

Part one of a series on my mic preamp project - looking at the VU meter & driver circuit. Schematic here: https://www.dropbox.com/s/66a6jrpxmntt5tk/VUDriverRev0.pdf?dl=0 The VU meter is from eBay seller 'jims_audio', listed as "VU meter huge size + warm back light for recording !" - link here: http://www.ebay.com/itm/VU-meter-huge-size-warm-back-light-for-recording-/321236001999