MARK LEVINSON ML-7AL
With L2 card : ¥ 1,650,000 (sold in 1986)
With L3/L3A card : ¥ 1,850,000 (sold in 1986)
Commentary
A control amplifier developed with 105 improvements based on the ML-7L.
The body (ML-7AL) and power supply (PLS-154L) are designed to be separated and independent, and three bus lines of plus, minus, and earth realize low impedance and suppress mutual interference.
All parts, including the volume and tape switching relay, are made from carefully selected materials such as MIL-standard for cosmic rays and aircraft. In particular, the heaviest RIAA path on the Phono stage uses MIL-standard vibration-resistant Teflon capacitors.
The connection terminals of the cards that make up each stage use an 8-PIN type with minimal contact resistance and little change in sound quality due to insertion and removal. A heat sink is installed on each card to stabilize the elements and improve the strength against external vibration.
Lead wires are minimized by thorough simplification such as the use of a four layer board for the I/O board.
The phono amp has two optional high-gain L3 and L3A plug-in cards that can be connected directly to the MC cartridge.
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Model Rating
| Type | Preamplifier |
| Configuration | Phono amplifier 2, line amplifier 2 Four plug-in configurations |
| Gain | Phono amplifier : 38 dB, 44 dB 66 dB with L3 plug-in card 54 dB with L3A plug-in card installed Line amplifier : 20 dB |
| Input impedance | Phono Amplifier : 50k Ω, 825 Ω (Switching) L3 plug-in card installed : 825 Ω With L3A plug-in card : 825 Ω Line amplifier : 10k Ω |
| Output impedance | Phono amplifier (Tape out) : 2k Ω Line amplifier (main out) : 47 Ω |
| Maximum power output | Phono Amplifier : 6.6 V Line amplifier : 8.0 V |
| Pwer | 100 VAC, 50Hz/60Hz |
| Power consumption | Approx. 25W |
| External dimensions | Body : Width 483x Height 51x Depth 216 mm Power Supply : W 101x H 101x D 269 mm |
| Weight | Body : 3.6 kg Power Supply : 2.4 kg |
| Sold Separately | L3/L3A Plug-in card (¥ 600,000) |