SW1X Audio Design SPA V Zenith

SPA V is a 3 gain stage Stereo Power Amplifier without input switch and volume control. Therefore it is ideally paired with our PRE III or PRE IV Line Pre-amplifier.

Puedes consultarnos sobre el producto por mail o whatsapp

SW1X Audio Design™ SPA V Zenith

Performance Level 3/4/5

300B DHT Power Amplifier

SPA V is a 3 gain stage Stereo Power Amplifier without input switch and volume control. Therefore it is ideally paired with our PRE III or PRE IV Line Pre-amplifier.

The Directly Heated 300B Triodes at the output need no introduction. They are driven either by popular 6J5/6SN7 input/driver tubes or with the powerful 6V6 to produce seemsless linear and balanced sound.

Available in different versions: Standard, Special and the limited Classic or Signature versions with different power output transformer options (M6, SHiB and UHiB) and all Copper or Copper/Silver windings

SW1X Audio Design™ SPA V Integrated Amplifier Features:

Specially Selected and Harmonically Matched Component & Material Quality
Single Ended, absolutely Zero NFB, Class A, Directly Heated Triode Valve Power Amplifier
2 x 6J5/6SN7 Triode driver/input Stage Valves driving the 2 x 300B DHT Valves
3 Amplification Gain Stage Design
Point 2 Point Hardwiring Technique for the most consistent production results
Internally wired exclusively with our SW1X Magnum, Genesis and Opus conductors
SW1X Audio Design™ Custom Designed (50 Watt) Signal Output Transformers
Quasi Mono, Directly Heated Double Diode Valve Rectified B+ Power Supply
Orient grain M6 EI core mains Transformers & Chokes
Valve rectified Fixed Bias Power Supply

Tube Compliment: 2 x 6J5, 2 x 6SN7, 2 x 300B, 1 x 5U4GB, 1 x 5Y3

SPA V is avaiable in 4 Versions with either Satin Silver or Matte Black front Panels

with a following output transformer (OPTs) specifications:

Standard: SW1X Audio Design™ all Copper wound, orient grain M6 EI Core OPTs
Special: SW1X Audio Design™ all Copper wound Super HiB DC Core OPTs
Classic: SW1X Audio Design™ Copper/Silver Windings, Super HiB DC Core OPTs
Signature: SW1X Audio Design™ Silver/Silver Windings, Super HiB DC Core OPTs

Optional Extras

Silver wound SW1X Audio Design™ Custom Designed Super HiB or Ultra HiB DC core Signal Output Transformers
Fully Hardwired Tube Output Stage on the Bakelite Board
Fine Silver wiring on the Input, Bakelite Board and Output
AN 2W non-magnetic Niobium resistors on a Hardwired Bakelite Board
Super HiB double C-Core mains transformers
Inter-stage signal decoupling capacitors: 1. Copper Foil in Oil or 2. Silver Foil capacitors
AN 2W silver, non-magnetic, Tantalum resistors

Specifications

Single Ended, Class A, Zero NFB, Output Power (W): 8, which sound at least like 50 Watts and the dynamic delivery feel like 500 W

when paired with with High Sensitivity Speakers (min 96dB/W/1m is recommended)

Input Sensitivity (V): 1

Input Impedance (Ohms): 47K or 100K

Output Impedance (Ohms): 4 & 8

Max Power Consumption (W): 250

Output Noise, Unweighted (mVrms): < 0.5

Dimensions (without tubes and feet): Height (mm) 250 x Width (mm) 440 x Depth (mm) 400

Weight (kg): 35

Note: Due to SW1X Audio Design’s ongoing research and development process, specifications are subject to change without notice