


Description
Radford STA 15 Mk111 British 1960's vintage valve power amplifier with a rich warm holographic dynamic sound and is an ideal amplifier for use with high sensitivity speakers over 90dB. I used it with my Devore O/96's with great results.
Refurbished with new chrome rails and valve sockets from Radford Revival in the UK and it is in a great overall condition.
New RCA sockets and speaker posts were fitted and it was recapped by Clarry at 34 Audio, our technical valve guru here in Auckland.
Complete with a selection of NOS testing vintage valves worth $1000.00 : German Zaerux/RFT EL34 x 4 British Mullard EF86 x 2 German Telefunken ECF82 x 2 British Mullard GZ34 x 1
Key Specifications: Power Output: ~15 Watts RMS per channel. Circuit: Variant of the Philips/Mullard '5-20' circuit with an EF86 input pentode and an ECF82 (6U8) as a phase-splitter. Bias System: Automatic biasing via cathode resistors for the 4 x EL34 valves. Output Transformers: Ultra-linear connections. Input Sensitivity: 0.5V for full output. Unique Features: Top quality hand wound British Radford Transformers made for high emphasis on excellent square wave response and rise time. Power Supply: Utilizes a GZ34 rectifier for the high-tension supply. Dimensions: 14" W x 10¾" D x 8½" H (356 x 273 x 216 mm) Weight: 36 lbs (16.36 kg)
Details
Shipping & pick-up options
Destination & description | Price | |
---|---|---|
To be arranged | N/A | |
Pick-up available from Auckland City, Auckland | Free |
Payment Options
Cash, NZ Bank Deposit, Credit card via Paypal
Questions & Answers (1)
Has the amplifier been serviced or recapped recently? Are all valves/tubes in good working order, and which brands or types are currently installed? Are the transformers original and in good condition (no hum or overheating)? Is the amp fully functional on both channels with no noise or imbalance? undeadlurker1 (7 • 10:16 pm, Mon, 13 Oct )Please read the item description as its all in there. harrison112 (864 • Monday, 13 October 2025 )