Brand New Special Audiophile Configured Dynaco ST-70 Tube Amplifier (SCX)
Brand New Special Audiophile Configured Dynaco ST-70 Tube Amplifier (SCX)
Brand New Special Audiophile Configured Dynaco ST-70 Tube Amplifier (SCX)
Brand New Special Audiophile Configured Dynaco ST-70 Tube Amplifier (SCX)
Brand New Special Audiophile Configured Dynaco ST-70 Tube Amplifier (SCX)
Brand New Special Audiophile Configured Dynaco ST-70 Tube Amplifier (SCX)
Brand New Special Audiophile Configured Dynaco ST-70 Tube Amplifier (SCX)
Brand New Special Audiophile Configured Dynaco ST-70 Tube Amplifier (SCX)
Brand New Special Audiophile Configured Dynaco ST-70 Tube Amplifier (SCX)
Brand New Special Audiophile Configured Dynaco ST-70 Tube Amplifier (SCX)
Brand New Special Audiophile Configured Dynaco ST-70 Tube Amplifier (SCX)
Brand New Special Audiophile Configured Dynaco ST-70 Tube Amplifier (SCX)
Brand New Special Audiophile Configured Dynaco ST-70 Tube Amplifier (SCX)
Brand New Special Audiophile Configured Dynaco ST-70 Tube Amplifier (SCX)
Brand New Special Audiophile Configured Dynaco ST-70 Tube Amplifier (SCX)
Brand New Special Audiophile Configured Dynaco ST-70 Tube Amplifier (SCX)
Brand New Special Audiophile Configured Dynaco ST-70 Tube Amplifier (SCX)
Brand New Special Audiophile Configured Dynaco ST-70 Tube Amplifier (SCX)
Brand New Special Audiophile Configured Dynaco ST-70 Tube Amplifier (SCX)
Brand New Special Audiophile Configured Dynaco ST-70 Tube Amplifier (SCX)
Brand New Special Audiophile Configured Dynaco ST-70 Tube Amplifier (SCX)
Brand New Special Audiophile Configured Dynaco ST-70 Tube Amplifier (SCX)
Brand New Special Audiophile Configured Dynaco ST-70 Tube Amplifier (SCX)
Brand New Special Audiophile Configured Dynaco ST-70 Tube Amplifier (SCX)
Brand New Special Audiophile Configured Dynaco ST-70 Tube Amplifier (SCX)
Brand New Special Audiophile Configured Dynaco ST-70 Tube Amplifier (SCX)
Brand New Special Audiophile Configured Dynaco ST-70 Tube Amplifier (SCX)
Brand New Special Audiophile Configured Dynaco ST-70 Tube Amplifier (SCX)
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Brand New Special Audiophile Configured Dynaco ST-70 Tube Amplifier (SCX)

Vendor
Funtastic Vintronics
Regular price
$0.00
Sale price
$0.00
Regular price
Sold out
Unit price
per 
Shipping calculated at checkout.

 

 

This amplifier is SOLD

Contact us to discuss details, payment / ordering options and pricing.

This and other models of the 70 series amps are available and are built to order. Turnaround time is approximately 30 days from order date.


If you're looking for that buttery smooth audiophile sound signature and a vintage look, this is the amp. This amp is amazing. At 70 watts (35WPC) it can drive most speakers. The amp is set up with binding posts/banana jacks for 4 and 8 ohm only, no 16 ohm terminals.

Mundorf MCap Zn capacitors, CDE silver mica capacitors, wirewound power resistors, metal film and carbon films in the audio path.  

The custom bias supply uses Nichicon electrolytic capacitors and has 1% metal film resistors for ultra quiet operation. The four section filter capacitor is from Dynakit.

This amplifier is equipped with the Dynakit "bias balance control" system. This allows equalizing and then balancing of the bias current between the individual output tubes for enhanced sonics, extended tube life and higher overall reliability. Bias is initially adjusted using the original bias pots. Then using the additional secondary adjusters located at the center holes of the front octal sockets, the balance is adjusted between each EL34 tube. This equalizes the current between each pair of output tubes. All four bias pots have safety resistors installed to protect the amplifier should a bias pot fail. Easy to follow bias setting instructions are included.

This amp is wired with 20 AWG solid core and 22 AWG stranded wire. The wiring is properly routed to minimize EMI and is secured with proper cable management.

The circuit is the original Dynaco engineered 6GH8A type which they introduced when 7199 tube production ceased man years ago. The PCB is from Dynakit, it's made on brown high grade FRP stock.

The new chassis is mirror polished, non magnetic stainless steel and is simply a work of art. The cover is included. Oversized feet have been installed to improve appearance and provide better ventilation.

The transformers are from Dynakit and are wound for 120 volt operation so you do not need a voltage reducer, the amp is plug and play as they say.

The output tubes are a brand new perfectly test matched quad of NessTone EL34/6CA7  

The Rectifier is a NOS Penta Labs 5AR4/GZ34. This tube tested at 110% on both sections

The 6GH8A tubes are (NOS) Sylvanis (USA)

I am only selling direct at this time, you will not be able to purchase through my site. Please call me at (918) 404-3918 to discuss payment options. You can also use the contact link at the top of this page for email correspondence.