| # | PART NUMBER | DESCRIPTION | PRICE ▲ | STOCK | SHOP | CC | SC |
|---|---|---|---|---|---|---|---|
| 1 | EL34M | Carr Mercury Harma Vintage Groove Tube EL34M Upgrade Kit | £90.00 | ☺︎ | Watford Valves | 🇬🇧 | |
| 2 | EL34M | Bugera G20 Infinium Harma Vintage Groove Tube EL34M Upgrade Kit | £99.00 | ☺︎ | Watford Valves | 🇬🇧 | |
| 3 | EL34M | Blackstar HT Stage 60 Mark Two Harma Vintage Groove Tube EL34M Upgrade Kit | £110.00 | ☺︎ | Watford Valves | 🇬🇧 | |
| 4 | EL34M | Carr Mercury Classic EL34M Groove Tube Full Upgrade Kit | £111.00 | ☺︎ | Watford Valves | 🇬🇧 | |
| 5 | EL34M | Marshall JCM 800 Series 2204/ 4104 50 watt head Harma Vintage Groove Tube EL34M Upgrade Kit | £115.20 | ☺︎ | Watford Valves | 🇬🇧 | |
| 6 | EL34M | Orange Rocker 30 Harma Vintage Groove Tube EL34M Upgrade Kit | £115.20 | ☺︎ | Watford Valves | 🇬🇧 | |
| 7 | EL34M | Marshall JCM 900 Series 2500 50 watt Harma Vintage Groove Tube EL34M Upgrade Kit | £115.20 | ☺︎ | Watford Valves | 🇬🇧 | |
| 8 | EL34M | Carr The Bloke Harma Vintage Groove Tube EL34M Upgrade Kit | £129.60 | ☺︎ | Watford Valves | 🇬🇧 | |
| 9 | EL34M | Marshall JCM 600 Series 50 watt Harma Vintage Groove Tube EL34M Upgrade Kit | £131.40 | ☺︎ | Watford Valves | 🇬🇧 | |
| 10 | EL34M | Friedman BE 50 Harma Vintage Groove Tube EL34M Upgrade Kit | £131.40 | ☺︎ | Watford Valves | 🇬🇧 | |
| 11 | EL34M | Marshall JCM 900 Series 2500 SLX 50 watt Harma Vintage Groove Tube EL34M Upgrade Kit | £131.40 | ☺︎ | Watford Valves | 🇬🇧 | |
| 12 | EL34M | Marshall JCM 2000 Series DSL 50 watt Harma Vintage Groove Tube EL34M Upgrade Kit | £131.40 | ☺︎ | Watford Valves | 🇬🇧 | |
| 13 | EL34M | Marshall JCM 2000 Series TSL 60H 60 watt Harma Vintage Groove Tube EL34M Upgrade Kit | £131.40 | ☺︎ | Watford Valves | 🇬🇧 | |
| 14 | EL34M | Friedman Runt 50 Harma Vintage Groove Tube EL34M Upgrade Kit | £131.40 | ☺︎ | Watford Valves | 🇬🇧 | |
| 15 | EL34M | Blackstar HT Stage 60 Mark One Harma Vintage Groove Tube EL34M Upgrade Kit | £132.00 | ☺︎ | Watford Valves | 🇬🇧 | |
| 16 | EL34M | Marshall JCM 800 Series 2205/ 4210 50 watt Harma Vintage Groove Tube EL34M Upgrade Kit | £147.60 | ☺︎ | Watford Valves | 🇬🇧 | |
| 17 | EL34M | Marshall JVM 205 Series 50 watt Harma Vintage Groove Tube EL34M Upgrade Kit | £147.60 | ☺︎ | Watford Valves | 🇬🇧 | |
| 18 | EL34M | Marshall JVM 215 Series 50 watt Harma Vintage Groove Tube EL34M Upgrade Kit | £147.60 | ☺︎ | Watford Valves | 🇬🇧 | |
| 19 | EL34M | Blackstar HT Studio 20 Classic EL34M Groove Tube Cryo Full Upgrade Kit | £148.00 | ☹︎ | Watford Valves | 🇬🇧 | |
| 20 | EL34M | Blackstar HT Club 40 Classic EL34M Groove Tube Cryo Full Upgrade Kit | £148.00 | ☹︎ | Watford Valves | 🇬🇧 | |
| 21 | EL34M | Blackstar HT Club 50 Classic EL34M Groove Tube Cryo Full Upgrade Kit | £148.00 | ☹︎ | Watford Valves | 🇬🇧 | |
| 22 | EL34M | Blackstar HT Soloist 60 Classic EL34M Groove Tube Cryo Full Upgrade Kit | £148.00 | ☹︎ | Watford Valves | 🇬🇧 | |
| 23 | EL34M | Carr The Bloke Classic EL34M Groove Tube Full Upgrade Kit | £154.80 | ☺︎ | Watford Valves | 🇬🇧 | |
| 24 | EL34M | Victory Sheriff 44 Classic EL34M Groove Tube Full Upgrade Kit | £157.50 | ☺︎ | Watford Valves | 🇬🇧 | |
| 25 | EL34M | Orange Thunderverb 50 Harma Vintage Groove Tube EL34M Upgrade Kit | £160.20 | ☺︎ | Watford Valves | 🇬🇧 | |
| 26 | EL34M | Orange Dual Dark 50 Harma Vintage Groove Tube EL34M Upgrade Kit | £162.00 | ☺︎ | Watford Valves | 🇬🇧 | |
| 27 | EL34M | Victory V50 The Earl Classic EL34M Groove Tube Full Upgrade Kit | £177.30 | ☺︎ | Watford Valves | 🇬🇧 | |
| 28 | EL34M | Victory Silverback Classic EL34M Groove Tube Full Upgrade Kit | £177.30 | ☺︎ | Watford Valves | 🇬🇧 | |
| 29 | EL34M | Hughes & Kettner Coreblade 100 Harma Vintage Groove Tube EL34M Upgrade Kit | £180.00 | ☺︎ | Watford Valves | 🇬🇧 | |
| 30 | EL34M | Blackstar HT Stage 60 Classic EL34M Groove Tube Cryo Full Upgrade Kit | £180.00 | ☹︎ | Watford Valves | 🇬🇧 | |
| 31 | EL34M | Marshall JCM 800 Series 2203/ 4103 100 watt Harma Vintage Groove Tube EL34M Upgrade Kit | £180.00 | ☺︎ | Watford Valves | 🇬🇧 | |
| 32 | EL34M | Marshall Handwired Series 1959 100 watt Harma Vintage Groove Tube EL34M Upgrade Kit | £180.00 | ☺︎ | Watford Valves | 🇬🇧 | |
| 33 | EL34M | Marshall JCM 900 Series 2100 100 watt Harma Vintage Groove Tube EL34M Upgrade Kit | £180.00 | ☺︎ | Watford Valves | 🇬🇧 | |
| 34 | EL34M | Friedman BE 100 Harma Vintage Groove Tube EL34M Upgrade Kit | £196.20 | ☺︎ | Watford Valves | 🇬🇧 | |
| 35 | EL34M | Marshall JCM 900 Series 2100 SLX 100 watt Harma Vintage Groove Tube EL34M Upgrade Kit | £196.20 | ☺︎ | Watford Valves | 🇬🇧 | |
| 36 | EL34M | Marshall JCM 2000 Series DSL 100 watt Harma Vintage Groove Tube EL34M Upgrade Kit | £196.20 | ☺︎ | Watford Valves | 🇬🇧 | |
| 37 | EL34M | Marshall JCM 2000 Series TSL 100H 100 watt Harma Vintage Groove Tube EL34M Upgrade Kit | £196.20 | ☺︎ | Watford Valves | 🇬🇧 | |
| 38 | EL34M | Blackstar HT Stage 100 Mark One Head Harma Vintage Groove Tube EL34M Upgrade Kit | £204.00 | ☺︎ | Watford Valves | 🇬🇧 | |
| 39 | EL34M | Marshall JCM 800 Series 2210/ 4211 100 watt Harma Vintage Groove Tube EL34M Upgrade Kit | £212.40 | ☺︎ | Watford Valves | 🇬🇧 | |
| 40 | EL34M | Hughes & Kettner Duotone Thayer Signature Harma Vintage Groove Tube EL34M Upgrade Kit | £212.40 | ☺︎ | Watford Valves | 🇬🇧 | |
| 41 | EL34M | Marshall JVM 210 Series 100 watt Harma Vintage Groove Tube EL34M Upgrade Kit | £212.40 | ☺︎ | Watford Valves | 🇬🇧 | |
| 42 | EL34M | Marshall JVM 410 Series 100 watt Harma Vintage Groove Tube EL34M Upgrade Kit | £212.40 | ☺︎ | Watford Valves | 🇬🇧 | |
| 43 | EL34M | Orange Dual Dark 100 Harma Vintage Groove Tube EL34M Upgrade Kit | £226.80 | ☺︎ | Watford Valves | 🇬🇧 | |
| 44 | EL34M | Blackstar HT Stage 100 Head Classic EL34M Groove Tube Cryo Full Upgrade Kit | £260.00 | ☹︎ | Watford Valves | 🇬🇧 |
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