MicroZOTL Preamplifier Level 3
Best sonic upgrade for discerning audiophiles seeking ultimate clarity.
This preamplifier leverages a revolutionary ZOTL topology for exceptional vacuum tube sound. Its pure Class-A, non-feedback design delivers incredibly low output impedance, resulting in lightning-fast transients, intricate harmonics, and deep, textured bass. The latest evolution refines this with an even quieter noise floor and enhanced audio circuitry on ceramic PCBs. Featuring an overbuilt linear power supply and optimized output stages, it provides effortless dynamics and detail, bringing music to life with soulful richness and an immersive listening experience.
$5950.00
Owner Satisfaction
4.7
/ 5
Category Rank
165
/ 895
#165 in Phono Preamps
Price vs Category Average
-14%
Below average
Amplifier class
Class A, no feedback
/ Class A, no feedback
Who it's for
- Audiophiles seeking uncolored, highly detailed sound reproduction.
- Listeners desiring an immersive, dynamic, and lifelike musical experience.
- Enthusiasts needing a versatile, top-tier preamplifier and headphone solution.
Who should skip it
- Users with lower-quality recordings or less refined source components.
- Budget-conscious buyers or those new to high-end audio.
- Tube enthusiasts specifically seeking a traditional, warm tube sound.
Performance breakdown
Sonic Transparency
ZOTL topology delivers exceptional clarity with a remarkably quiet noise floor.
Transient Response
Ultra-low output impedance ensures lightning-fast speed and precise musical articulation.
Build Integrity
Ceramic PCBs and an overbuilt power supply reflect premium engineering standards.
Headphone Versatility
Robust output stage drives a wide range of headphones with ease.
Volume Precision
High-resolution stepped attenuator provides granular control for perfect gain matching.
Connectivity Flexibility
Balanced and single-ended inputs accommodate diverse high-end source components.
Key Specs
Amplifier class
Class A, no feedback
Inputs
4 Stereo RCA single ended inputs using high quality Cardas connectors; 1 XLR transformer-coupled balanced input, with Lundahl transformers. One Tape input.
Outputs
Headphone ¼” Phone jack, dual RCA single-ended preamplifier outputs, Tape Monitor output
Volume Control
Stepped attenuator with two settings. Default: 100 steps logarithmic; High-Res: 199-steps, linear
Gain
+14dB
Input sensitivity
0.75Vrms
Input impedance
Single-ended: 50k ohms, Balanced: 100k ohms
Output impedance
Preamp output: 50 ohms, Headphone output: 1.38 ohm
Know before you buy
The ZOTL (Zero-hysteresis Output Transformer-Less) design eliminates the output transformers typically found in tube amps, which often introduce distortion and limit frequency response. This allows the MicroZOTL to achieve an exceptionally low output impedance, resulting in faster transients and a much more transparent, accurate sound.
Yes, the MicroZOTL features a high-quality 1/4-inch headphone output on the front panel. With an output impedance of just 1.38 ohms, it is capable of driving a wide range of headphones with the same clarity and detail as your main speaker system.
The unit uses a high-resolution stepped attenuator for precise volume adjustments. You can toggle between two modes: a default 100-step logarithmic setting for standard use, or a 199-step linear setting if you prefer finer control over the volume levels.
Yes, the unit features one transformer-coupled balanced XLR input using high-quality Lundahl transformers. This allows you to integrate balanced sources while maintaining the sonic benefits of the ZOTL design.
Yes, the MicroZOTL includes a dedicated Tape Monitor output and a Tape input. This makes it a versatile choice for users who still incorporate analog tape decks into their listening setups.
The MicroZOTL uses two 12AT7 and two 6SN7 tubes, which are widely available and known for their longevity. Like any tube-based component, you will eventually need to replace them, but the design is optimized for stability and reliability to ensure a long service life.
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