Description

Power Supply for Vacuum Tube Power Audio Amplifier Heater/Filament soft start - PSP75-6.3 [100-240VAC - 6.3V/12A/75W] Power Supply for Filament Heating of Vacuum Tubes in Tube Audio Amplifiers PSP75-6.3 [100-240VAC 6.3V/12A/75W] Power Supply for Filament Heating of Vacuum Tubes in Tube Audio Amplifiers PSP75-6.3 Listing includes: Power Supply for Filament Heating of Vacuum Tubes in Tube Audio Amplifiers [PSP75-6.3] Dear customers! If you have ANY questions, PLEASE ASK us Description: Switching Power Supply PSP75-6.3 with Built-in Soft Start, Specifically Designed for Powering Filament Heating of Vacuum Tubes in Tube Audio Amplifiers. The PSP75-6.3 Power Supply is engineered to provide stable filament voltage of 6.3 Volts, which is critical for maintaining sound quality and extending tube life. In the audiophile world Tube Amplifiers considered the gold standard for high-quality sound, making their assembly a popular hobby among analog sound enthusiasts. A key component of such amplifiers is the Power Supply, which ensures a stable filament voltage for the Tubes. This stability is essential for maintaining consistent electron emission and a steady gain factor in the Tubes. For example, a drop in filament voltage by just half a volt can lead to a 20-30% decrease in gain resulting in both reduced output power and increased non-linear distortion due to degraded linearity of the Tubes characteristic curves. Key Features of the PSP75-6.3 Power Supply: 1. Soft Start: utilizing constant current and constant voltage (CC/CV) modes, Power Supply prevents current spikes during startup, which is particularly important while the Tubes are warming up and the resistance of their filaments is significantly lower than the nominal values. Applying nominal voltage to the filaments at this stage would cause a sharp increase in inrush current, far exceeding the nominal level, which can significantly shorten tube life. 2. Voltage Stability: high precision of the output voltage ensures the Tubes operate within the linear region of their characteristic curves, providing low distortion and a consistent gain factor. 3. Absence of Acoustic Noise: most switching Power Supplies emit a noticeable high-pitched noise, which is completely unacceptable for audio amplifier use. Since this Power Supply is specifically designed for Tube Audio Amplifiers, special care has been taken to ensure it operates silently. Power Supply is also designed to operate without a cooling fan, as any fan introduces noise. 4. Reliability and Longevity: this Power Supply is specifically designed for use with Vacuum Tubes, offering high efficiency (up to 86%) and the capability to operate in a closed enclosure without active cooling at loads up to 50 watts. Power Supply uses high-grade japanese capacitors from Rubycon, Nichicon, and Nippon Chemi-Con. If you are assembling a Tube Amplifier or looking to upgrade an existing one, the PSP75-6.3 power supply is an essential component, ensuring high sound quality and reliable operation of your device. Specifications: Output Voltage: 6.3 VDC (adj. 6 – 7V) Maximum current: 12 A (adj. 3 – 15A) Output Power: 75 Watt Input voltage range: 85 – 264V AC Input Frequency: 50/60Hz Output connector: Mini-Fit MF-4MA Input connector: B3P VH Efficiency: up to 86% Ripple and Noise(Max.): 50 mVp-p Weight: 200 g Dimensions: 4″ (100x60x40mm) Power Supply for Filament Heating of Vacuum Tubes in Tube Audio Amplifiers PSP75-6.3 Power Supply for Filament Heating of Vacuum Tubes in Tube Audio Amplifiers PSP75-6.3 Power Supply for Filament Heating of Vacuum Tubes in Tube Audio Amplifiers PSP75-6.3 Power Supply for Filament Heating of Vacuum Tubes in Tube Audio Amplifiers PSP75-6.3 Dear customers! If you have ANY questions, PLEASE ASK us Shipping and Return information All Items are shipped from Ukraine Via International registered Airmail Shipments are made within 1 business day After the payments are received and verified It takes about 4-7 days via UPS Express delivery It takes about 10-18 days via Standard shipping It takes about 35-45 days via Economy shipping We combine multiple Items to save on shipping UPS Express Shipping time (recommended): Europe: 3-5 days Germany: 3-5 days USA, Canada: 4-7 days Asia, South America: 5-7 days Australia, New Zealand: 5-7 days Africa, Central America: 5-7 days Standard Shipping time: Europe: 10-12 days Germany: 10-12 days USA, Canada: 10-15 days Asia, South America: 10-18 days Australia, New Zealand: 12-18 days Africa, Central America: 12-18 days Economy Shipping time: Europe: 25-30 days Germany: 25-30 days USA, Canada: 30-35 days Asia, South America: 35-45 days Australia, New Zealand: 45-55 days Africa, Central America: 45-55 days Return Policy All Returns are accepted For Return you should contact Us within 14 Days after receiving the Item Refunds are made as Money back or Replacements (buyer’s choice) Return Shipments are paid by the buyer No restocking fees are charged Dear Customers! If you have ANY questions, PLEASE ASK US