The Dynavector P75 Mk4 is a compact, full-featured MM/MC phono preamplifier with five selectable gain settings (40dB to 63dB), six impedance options, three capacitance settings, and Dynavector's proprietary Phono Enhancer (PE) mode. The two-piece design separates the audio circuit from the new ultra-low-noise switching power supply introduced in the Mk4, keeping electrical interference away from the sensitive phono signal path. At 160mm wide and 500 grams, it fits anywhere but performs well beyond its size. The P75 Mk4 is the natural phono stage partner for any Dynavector cartridge, but it works equally well with cartridges from other manufacturers. The PE mode is what sets it apart from the competition at this price point. Rather than amplifying voltage like a conventional phono stage, PE mode operates as a current amplifier, fundamentally changing how the cartridge interacts with the electronics. Dynavector designed it specifically to extract more from their own MC cartridges, but the results are impressive with any low-output MC. If you're running a Dynavector cartridge and want to hear what it's truly capable of, this is the phono stage to pair with it. Key Features of the Dynavector P75 Mk4 Five Gain Settings: 40dB, 46dB, 56dB, 60dB, and 63dB selectable via internal jumpers, accommodating everything from high-output MM cartridges to the lowest-output MC designs. Six Impedance Options: 60, 100, 130, 220, 470, and 47,000 ohms, covering the full range of cartridge loading requirements for both MM and MC types. Phono Enhancer (PE) Mode: Dynavector's current-drive amplification mode presents a near-zero impedance load to the cartridge, changing the electrical relationship between cartridge and phono stage for improved dynamics and detail. Three PE Impedance Ranges: PE mode selectable for 4-10 ohm, 10-20 ohm, and 20-50 ohm cartridge impedances. Ultra-Low-Noise Mk4 Power Supply: New in the Mk4, the switching power supply converts the external 12V DC input to dual high voltages with noise levels that are virtually unmeasurable. Three Capacitance Settings: 100pF, 200pF, and 300pF input capacitance for fine-tuning MM cartridge response. Compact Two-Piece Design: Audio circuit and power supply are physically separated to eliminate electrical interference. Phono Enhancer (PE) Mode The P75 Mk4's most distinctive feature is the Phono Enhancer mode, a current-drive amplification topology that Dynavector developed specifically for MC cartridges. In conventional voltage-mode operation, the phono stage presents a load impedance to the cartridge, and the cartridge generates a voltage signal proportional to stylus motion. In PE mode, the amplifier presents a near-zero impedance load, effectively a short circuit, forcing the cartridge to generate a current signal instead. The amplifier then converts this current to voltage before the RIAA equalization stage. The practical effect is significant: the cartridge's internal impedance becomes the only factor determining the electrical load, eliminating cable capacitance and connector resistance from the equation. This results in improved transient response, greater dynamic range, and more detailed low-level information retrieval. PE mode is available in three impedance ranges (4-10, 10-20, and 20-50 ohms) to match different MC cartridge specifications. Most Dynavector cartridges with 5-6 ohm impedance work optimally in the 4-10 ohm PE setting. Mk4 Power Supply Improvements The most significant change in the Mk4 revision is the completely redesigned power supply. The new ultra-low-noise switching design is electrically isolated from the input power, converting the 12V DC from the external adapter into the dual high voltages required by the audio circuit. Power supply noise, which in lesser designs can manifest as hum or a raised noise floor, is reduced to levels that are effectively unmeasurable. The external power supply keeps the transformer and its associated electromagnetic field physically separated from the sensitive phono amplification circuits. Versatile Loading and Gain Configuration The P75 Mk4 accommodates virtually any phono cartridge through its comprehensive loading options. MM cartridges run at the standard 47k ohm impedance with selectable capacitance (100, 200, or 300pF) to fine-tune high-frequency response. MC cartridges can be loaded at 60, 100, 130, 220, or 470 ohms in conventional voltage mode, or operated in PE mode for current-drive amplification. Gain is adjustable from 40dB (suitable for high-output cartridges) to 63dB (for the lowest-output MC designs like Dynavector's 0.26mV Te Kaitora Rua). All settings are configured via internal jumpers, accessible by removing the top cover. Explore the Full Dynavector Range The P75 Mk4 pairs naturally with any Dynavector cartridge. Explore the complete lineup: DV-10X5 Mk2 - Entry-level MC with dual output, ideal with P75 in PE mode. DV-20X2 - Mid-range MC with flux damper technology. DV-20X2A - Upgraded micro-ridge with PCOCC coils. SUP-200 - Dedicated MC step-up transformer for purist setups. The Listening Room Difference We're a third-generation family business with a brick-and-mortar showroom in Chestertown, Maryland, and a reputation built on exceptional service and relentless passion for hifi. Whether you're visiting in person or ordering online, we bring decades of experience, personalized service, and honest guidance to every interaction. We don't just ship boxes. We help build systems, answer your questions like real humans, and make sure every detail of your setup is right, from the cables to the final connection. Our passion is helping you get the most out of your gear, with support that lasts well beyond the sale.Dynavector P75 Mk4 Specifications Type MM/MC Phono Preamplifier with Phono Enhancer Gain 40dB, 46dB, 56dB, 60dB, 63dB (selectable) Input Sensitivity 0.2mV - 2.0mV Input Impedance 60, 100, 130, 220, 470, 47,000 ohms Input Capacitance 100pF, 200pF, 300pF PE Mode Ranges 4-10 ohms, 10-20 ohms, 20-50 ohms Input RCA (phono) Output RCA (line level) Power Supply External 12V DC, ultra-low-noise switching Dimensions 46mm (H) x 160mm (W) x 118mm (D) Weight 500g (without power supply)
