Fezz Audio
Lybra MK2
Fezz Audio introduces Lybra MK2 300B integrated amplifier
The Lybra MK2 joins Fezz Audio's Evolution range. The company is also introducing the Lybra Mono Power Amplifier as a separate power-amplifier option for systems with an external preamplifier.
Georg S. Kuklick
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Fezz Audio has introduced the Lybra MK2 with a redesigned signal path. The 300B integrated tube amplifier delivers 15 watts per channel and is available through selected dealers.
The amplifier uses a Parallel Single-Ended topology, with two 300B output triodes operating in parallel in each channel. Three 6SN7 dual triodes complete the tube complement. Proprietary toroidal output transformers provide speaker connections for nominal 4-ohm or 8-ohm loads.
Connectivity includes three RCA line-level inputs and a Direct input, labelled HT Pre-In, which bypasses the internal volume control for power-amplifier operation. A dedicated Sub-Out connection accommodates an active subwoofer. Two expansion slots support optional modules offering Bluetooth, phono-preamplifier or DAC functionality.
Automatic bias adjustment is provided, while a delayed high-voltage supply allows the tubes to warm up before normal operation. A remote control and protective tube cage are included as standard equipment. A version equipped with premium tubes is also offered at an additional cost.
The metal chassis has rounded edges and measures 420 × 380 × 226 mm, with a weight of 23.5 kg. The available finishes are Black Ice, Big Calm, Burning Red, Republika, Evergreen, Moonlight and Sunlight.
Key specifications
Amplifier topology | Parallel Single-Ended (PSE); two 300B triodes in parallel per channel |
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Output power | 15 W per channel |
Tube complement | 4 × 300B output tubes; 3 × 6SN7 dual triodes |
Output transformers | Proprietary toroidal output transformers |
Bias adjustment | Automatic |
High-voltage supply | Delayed application for tube warm-up |
Speaker connections | 4 Ω and 8 Ω nominal loads |
Inputs | 3 × RCA line-level; Direct input (HT Pre-In) bypassing volume control |
Subwoofer output | Dedicated Sub-Out for an active subwoofer |
Expansion | Two optional-module slots; Bluetooth, phono-preamplifier or DAC functionality |
Dimensions | 420 × 380 × 226 mm |
Weight | 23.5 kg |
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