Leema Acoustics Constellation Tucana II Anniversary Integrated Amplifier - 2026
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Product Overview & Specifications
The Leema Acoustics Tucana II Anniversary Integrated Amplifier is a reference-grade, high-current dual-mono integrated amplifier designed and handcrafted in Wales. Celebrating a decade of the acclaimed Tucana design, the Anniversary Edition features substantial internal audio-grade component upgrades, including double-weight copper PCBs, Nichicon MUSE capacitors, Leema Reference internal loudspeaker wiring, and dual dedicated Noratel ultra-quiet toroidal transformers. Capable of driving complex, low-impedance loudspeaker loads with complete authority, the Tucana II Anniversary generates 150 Watts RMS per channel into 8 Ohms, doubling to 290 Watts into 4 Ohms, and stable down to 520 Watts into 2 Ohms.
Engineered with six selected high-current power transistors per channel, the amplifier maintains an ultra-low noise floor (below -100 dB) and exceptionally low distortion (THD 0.004%). Functional versatility is built into its analog preamplifier stage, which includes individually adjustable input gain levels, balance control, AV direct pass-through integration, a dedicated headphone amplifier, and Leema's proprietary LIPS® (Leema Intelligent Protocol System) bus for seamless system integration. Each unit comes with a chrome-plated Leema Delta logo, an individual production passport, and signed testing documentation.
KEY FEATURES & ANNIVERSARY EDITION UPGRADES
- High-Current Dual-Mono Power Architecture: Powered by dual dedicated Noratel ultra-quiet toroidal transformers and 6 high-current power transistors per channel for effortless drive down to 2 Ω loads.
- Double-Weight Copper Anniversary PCBs: Heavy-gauge copper circuit boards double the current-carrying capacity, lowering total internal impedance and improving power delivery.
- Nichicon MUSE Audio-Grade Capacitors: Premium audiophile-grade capacitors implemented in critical signal path and power bypass positions for enhanced micro-detail and tonal warmth.
- Leema Reference Internal Speaker Wiring: Multi-strand, high-purity internal speaker cabling maintains pristine signal transfer from output devices to binding posts.
- Comprehensive Analog Connections: Features 1x balanced stereo XLR input, 6x unbalanced stereo RCA inputs, dedicated tape loop (in/out), pre-out, and a front-panel 3.5mm aux input.
- Smart Preamplifier Features: Offers independent gain adjustment for each input source, balance control, AV integration mode, and thermal protection systems.
- LIPS® Master / Slave Protocol: Proprietary Leema Intelligent Protocol System allows centralized communication and volume synchronization with other Leema source components.
- Handcrafted in Wales, UK: Individually assembled, tested, and supplied with a signed production passport and premium Focus system remote control.
SPECIFICATIONS
| Specification | Detail |
|---|---|
| Product Category | Stereo Integrated Amplifier (Anniversary Edition) |
| Amplifier Architecture | High-Current Dual Mono Design |
| Power Output RMS @ 8 Ω | 150 W RMS per channel |
| Power Output RMS @ 4 Ω | 290 W RMS per channel |
| Power Output RMS @ 2 Ω | 520 W RMS per channel |
| Total Harmonic Distortion (THD) | 0.004% @ 90% Rated Output Power |
| Noise Floor | < -100 dB |
| Frequency Response | 5 Hz – 100 kHz (+0 / -3 dB) |
| Transformers & Power Supply | 2x Custom Noratel Ultra-Quiet Toroidal Transformers |
| Output Transistors | 6x Hand-Selected Transistors per Channel (12 Total) |
| Balanced Analog Inputs | 1x Stereo Pair XLR |
| Unbalanced Analog Inputs | 6x Stereo Pairs RCA |
| Tape Loop & Auxiliary Inputs | 1x Stereo RCA Tape In, 1x Stereo RCA Tape Out, 1x Front 3.5mm Aux In |
| Analog Outputs | 1x Stereo RCA Preamp Out, 1x Front 3.5mm Headphone Jack |
| System Control Protocol | Leema LIPS® Bus (Configurable Master or Slave) |
| Input Gain & Balance Control | Individual Input Gain Adjustments & Channel Balance Control |
| Dimensions (W x D x H) | 440 x 320 x 110 mm (17.3" x 12.6" x 4.3") |
| Net Weight | 18.0 kg (39.7 lbs) |
| Country of Origin | Designed and Manufactured in Wales, UK |
| Included Accessories | Focus System Remote Control, Signed Testing Passport, Owner's Manual |

