Key Features
- KT88 output valves wired in triode connection — a configuration that reduces output power relative to standard pentode operation but is valued for its lower distortion characteristics and the sonic qualities associated with true triode amplification
- Push-pull circuit topology using a matched pair of KT88 output valves per channel
- Modified in England by the Affordable Valve Company — modifications include silver mica capacitors, NOS American GEC 5670 military-grade small signal valves, and a ferrite ring mains filter
- The KT88 is a well-regarded and widely produced beam tetrode output valve, introduced by GEC in the United Kingdom in 1956 and used extensively in high-fidelity amplifier designs. Replacement valves are readily available from a number of UK suppliers
- Standard RCA line-level inputs
- Loudspeaker outputs with selectable impedance taps
- Well suited to loudspeakers of moderate to high sensitivity, given the reduced power output associated with triode operation
Technical Specifications
- Type: Push-pull KT88 valve integrated amplifier
- Circuit Topology: Triode connection
- Output Valves: KT88 (matched pair per channel)
- Small Signal Valves: NOS American GEC 5670
- Modifications: Silver mica capacitors, ferrite ring mains filter, hand-tuned in England
- Country of Modification: United Kingdom
If you require further technical detail, please contact us directly and we will do our best to assist.
Why Buy From Us
With over 40 years of experience in the Hi-Fi industry, we are well placed to assess and test valve equipment of this type. Every item we list is fully inspected and tested before sale.
When you buy from us you can expect:
- Full inspection and testing prior to listing — not simply a visual check
- A 3-month guarantee on every item we sell
- Transparent descriptions with no omissions
- Professional packaging to ensure safe delivery
- After-sales support available by phone or email should you have any questions
Summary
The Affordable Valve Company KT88 Triode Connection MK4 is an English-modified KT88 push-pull amplifier operated in true triode connection, representing a straightforward entry point into KT88 valve amplification with the added benefit of the company’s own modification work. This example is in excellent condition and ready to use. This is a single-unit listing. Please feel free to get in touch with any questions prior to purchase.
