SKU: 34216338286

DYNACO ST-70 6GH8A / 6GH8 COMPLETE STUFFED PC-3 DRIVER BOARD (Retro Phenolic Look) WITH TUBES (NOS Platinum matched pair of 6GH8A EI Philips)

Sale price$68.39 Regular price$75.99
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Description

DYNACO ST-70 6GH8A / 6GH8 COMPLETE STUFFED PC-3 DRIVER BOARD (Retro Phenolic Look) WITH TUBES (NOS Platinum matched pair of 6GH8A EI Philips)DYNACO ST 70 6GH8A 6GH8 COMPLETE STUFFED PC 3 DRIVER BOARD (Retro Phenolic Look) WITH TUBES (NOS Platinum matched pair of 6GH8A EI Philips) This is Dynaco ST 70 driver board PC 3. Its developed and designed to be drop in replacement and it follows original wire hole layout, but its modified to use widely available 6GH8 6GH8A 6KD8 ECF82 tubes instead of obsolete and hard to find 7199 tubes. You can find many quality NOS tubes of any of these types for

DYNACO ST-70 6GH8A / 6GH8 COMPLETE STUFFED PC-3 DRIVER BOARD (Retro Phenolic Look) WITH TUBES (NOS Platinum matched pair of 6GH8A EI Philips)

 

This is Dynaco ST-70 driver board PC-3. It’s developed and designed to be drop in replacement and it follows original wire hole layout, but it’s modified to use widely available 6GH8 / 6GH8A / 6KD8 / ECF82 tubes instead of obsolete and hard to find 7199 tubes.  You can find many quality NOS tubes of any of these types for normal prices and you can enjoy tube rolling with this driver board.  It’s also modified to accept modern and NOS coupling capacitors of various types and dimensions.

It’s made of hi quality epoxy fiberglass FR4 material 1.6mm (0.062’) thickness, it’s single layer board with solder rings at the bottom layer.  Solder reflow process is done at the bottom layer and blue solder mask is applied at the bottom side. All connections and elements on the board are silkscreened with original DYNACO numbering, so you can use original DYNACO ST-70 manual to complete it or we can provide it.

This is complete board! One brand new PCB, ceramic sockets, Hi Quality MKP coupling capacitors, silver mica capacitors, metal film, metal oxide and carbon oxide resistors and one NOS matched pair (two tubes) of 6GH8A EI Philips. They are made back in 80s in EI tube factory, under Philips licence and with some of genuine Philips materials. They were intended for export, so they have passed strict quality control. Every pair is selected from the same batch with same date codes and tubes are real platinum matched pairs, tested on my calibrated METRIX U61-B tester.

All coupling capacitors are high quality MKP Metallized Polypropylene (PP) Capacitors. 120nF are used vs original 100nF, for a bit better bass response. Also silver mica capacitors are used, metal film, metal oxide and carbon resistors for good performance and lowest hum.

Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
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SKU: 34216338286

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4.5 ★★★★★
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Verified Purchase
Dong
Charlottesville, US
★★★★★ 5
Nice Sneakers
Size: 9, Color: Black
Very comfortable and easy to wear. They feel lightweight and fit true to size. Good value for the price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
A
Verified Purchase
Amazon Customer
Massapequa, US
★★★★★ 1
Loud, cheap shoes
Size: 9, Color: Black
Loud and squeaky, making them unwearable
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Reviewed in the United States on April 2, 2026
X
Verified Purchase
xxscallerxx
Bozeman, US
★★★★★ 3
Becareful of the shoe size
Size: 8, Color: Black
the size was not what i expected, most shoes i wear have always been a size 8, but this one was a bit tight. I asked a question on the page if the size is based on UK or US since there's a 1 size difference. but it said it was US standard reference. perhaps buying a size 9 would fix this issue for me. The quality of the shoes however is very great, compared to the basic shoe affordable brands you get this one has better quality, they're light and great whether you're stationary or actively jogging or walking. just the size was lacking in fit.
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Reviewed in the United States on February 9, 2026
A
Verified Purchase
Ahmet Said Tuğrul
Phoenix, US
★★★★★ 2
Not recommended
Size: 9.5, Color: Navy
Not comfortable and hurt my ankle. Makes weird leather sounds while walking. Looks good but go for a different shoe if you are looking for comfort.
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Reviewed in the United States on March 1, 2026
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Verified Purchase
Hank Martin
Birmingham, US
★★★★★ 5
Great watch
Color: Blue Gradient on Stainless Steel
Beautiful piece
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Reviewed in the United States on June 10, 2026

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