Heathkit W-5M Tube Amplifier Cage & Dynaco MK II Cage Should fit a MK III As well Photo #2258246 - US Audio Mart
BoyuuRange A50 MKIII 300B Single-end Class A Vacuum Tube Amp HiFi Integrated Amplifier With VU Meters (Updated Version) _ - AliExpress Mobile
Archimago's Musings: MEASUREMENTS: Melody Onix SP3 Mk. II (~2006) Class AB Tube Integrated Amplifier. (And it isn't "diminishing returns" on sound quality, often there are simply "no returns".)
Amazon.com: BoyuuRange REISONG A50 MKIII 300B HiFi Intergrated Tube Amplifier Single-end Class A Valve Amp with Tube Cage : Electronics
Dynaco Dynakit Stereo 35 (ST35) Tube Amplifier Schematic and Manual
Amazon.com: BoyuuRange REISONG A50 MKIII 300B HiFi Intergrated Tube Amplifier Single-end Class A Valve Amp with Tube Cage : Electronics
Monoprice Pure Tube Stereo Amplifier with Bluetooth, Line and Phono Inputs, and Qualcomm aptX Audio - Monoprice.com
Single Dynaco MK III 3 Amp & Cage Use KT88/6550 GZ34 Tubes made for Telematics, Inc Tech Tested | Reverb
Boyuurange A50 Mkiii 300b Single-end Class A Vacuum Tube Amp Hifi Integrated Amplifier With Vu Meters (updated Version) - Home Theater Amplifiers - AliExpress
Amazon.com: Little Dot MK III Headphone Tube Amplifier : Electronics
McIntosh MC3500 Mk II Vacuum Tube Amplifier - Part-Time Audiophile
Dynaco Mark III Mono Block Tube Power Amplifiers & Covers,Just Rebuilt! | eBay