📍 Los Angeles County & SoCal
🔧 30+ Years Experience
🎚️ High-End Reference Specialist
🏢 TEK Media Group
🇺🇸 WE WORK LOCALLY & NATIONWIDE 🇺🇸
Los Angeles • Southern California • Shipping Available Across the United States
📋 TECHNICAL DISCLAIMER: The Mark Levinson No. 32 Reference preamplifier is a complex dual-chassis design with sophisticated digital and analog circuitry. It requires specialized knowledge, documentation, and test equipment for proper restoration. I have the expertise and parts access to restore these units correctly.
⚠️ CRITICAL WARNING – MARK LEVINSON NO. 32 SPECIFIC: The No. 32 uses proprietary volume control and gain stage modules, complex power supply regulation, and high-quality but aging electrolytic capacitors. Capacitor degradation causes noise, reduced transparency, and compromised performance. I provide a thorough, methodical restoration to factory specifications.
About the Mark Levinson No. 32 Reference & My Approach
The Mark Levinson No. 32 Reference preamplifier (circa 2000-2007) represents the absolute pinnacle of solid-state preamplifier design. Featuring a dual-chassis configuration (separate power supply and control/audio chassis), a fully discrete, balanced, dual-mono topology, and a legendary R-2R ladder volume control, the No. 32 set new standards for transparency, dynamics, and musicality. It remains highly sought after by discerning audiophiles worldwide. I've restored dozens of Mark Levinson preamplifiers over three decades, and I treat each No. 32 with meticulous care, using premium replacement parts while preserving the original reference-grade sonic character.
✅ WHY TRUST TEK MEDIA GROUP WITH YOUR MARK LEVINSON NO. 32:
- 30+ Years of High-End Audio Restoration Experience
- Specialized Knowledge of Mark Levinson Reference Preamps
- Complete Dual-Chassis Restoration (Power Supply + Audio Chassis)
- Full Capacitor Replacement: Power Supply, Audio, Control Boards
- Volume Control Restoration (R-2R ladder & control logic)
- Gain Module Service & Calibration
- Precision DC Offset & Channel Matching
- 100% Personal Attention – No Assembly Line
- 90-Day Warranty on All Work
- Nationwide Service – Secure Shipping Available
Complete Mark Levinson No. 32 Restoration Services
🔍 Full Diagnostic & Evaluation Complete assessment, power supply check, noise measurement, baseline performance
⚡ Power Supply Rebuild (Separate Chassis) Replace all electrolytic capacitors, bridge rectifiers, voltage regulators, and critical resistors
🎛️ Audio Chassis Restoration Full recap of audio boards, gain module service, signal path optimization
🔊 Volume Control Restoration R-2R ladder check, control logic verification, relay replacement if needed
📟 Control & Display Board Service Capacitor replacement, display check, microprocessor voltage verification
🎚️ Gain Module Calibration Verify gain settings, DC offset adjustment, channel matching
🔌 Connector & Relay Service Clean input/output relays, check RCA/XLR connections, replace worn jacks
🏆 COMPLETE FULL RESTORATION All services above – your No. 32 will perform to original reference specifications
💡 WHAT MY RESTORATION INCLUDES: Full electrolytic recap (both chassis) • Power supply rebuild • Volume control service • Gain module calibration • DC offset adjustment • Relay cleaning/testing • Control board recap • 90-day warranty.
Deep Dive: My Mark Levinson No. 32 Restoration Process
⚡ POWER SUPPLY CHASSIS (Critical for Reference Performance)
- Main Filter Capacitors: Large snap-in electrolytics in the separate power supply chassis – I replace with high-ripple, low-ESR, 105°C rated types (Nichicon KG, Cornell Dubilier, or Panasonic).
- Regulator Section: I replace all small electrolytic capacitors on the regulator boards, verify voltage rails for both analog and digital sections.
- Bridge Rectifiers: I test and replace if noisy, upgrade to ultra-fast soft recovery types for lower noise floor.
- AC Input & Safety: I inspect AC input filter, replace RIFA caps if present, check fuses and IEC inlet.
- Power Supply Umbilical: I check the umbilical cable and connectors for wear, clean contacts.
🎛️ AUDIO CHASSIS – SIGNAL PATH RESTORATION
COMPLETE AUDIO CIRCUIT RESTORATION:
- Electrolytic Capacitors: All coupling and power supply decoupling caps on the audio boards are replaced with audio-grade types (Nichicon FG, Elna Silmic II, or WIMA films for small values).
- Gain Modules: The proprietary gain modules are carefully inspected, recapped, and calibrated. These are the heart of the No. 32's sound.
- Volume Control (R-2R Ladder): I verify the resistor ladder accuracy, check control logic, and replace any faulty relays in the attenuator circuit.
- DC Offset Calibration: I adjust DC offset at outputs to near 0mV for optimal performance with any power amplifier.
- Channel Matching: I ensure both channels are matched within 0.1dB across the entire volume range.
🔊 INPUT / OUTPUT SECTION
- Input Relays: The No. 32 uses high-quality relays for input switching. I test and replace any that show increased contact resistance.
- Connector Cleaning: I clean all RCA and XLR connectors with DeoxIT, tighten any loose jacks.
- Balanced Line Driver/Receiver: I verify proper operation of balanced input and output stages, check common-mode rejection.
📟 CONTROL & DISPLAY BOARD
- Microprocessor Supply Caps: Replace electrolytic capacitors on the control board to ensure stable operation of the logic circuits.
- Display VFD Check: I verify the vacuum fluorescent display for brightness and missing segments. Replacement displays are available if needed.
- Front Panel Controls: I clean the volume encoder and button contacts, ensuring smooth operation.
- Remote Control Sensor: I check IR receiver operation, replace if weak.
Common Mark Levinson No. 32 Problems I Solve
#1 Capacitor Aging in Power Supply
Symptom: Increased noise floor, loss of transparency, hum, reduced dynamics.
My Solution: Complete recap of all electrolytic capacitors in both chassis, focusing on power supply and regulator sections.
#2 Volume Control Issues
Symptom: Skipping steps, uneven channel balance, noisy volume changes, stuck at certain levels.
My Solution: Clean or replace relays in the R-2R ladder, check control logic, recalibrate volume mapping.
#3 DC Offset Drift
Symptom: Output relay protection triggering, audible thump on power on/off, DC at outputs.
My Solution: Replace aging input differential pair transistors (if discrete), recalibrate DC offset, replace capacitors in servo circuit.
#4 One Channel Distorted / Low Output
Symptom: Imbalance between channels, distortion on one side.
My Solution: Check gain modules, replace capacitors in signal path, verify relay contacts, check for failed op-amps.
#5 Display Dim or Missing
Symptom: VFD display dim, flickering, or not working.
My Solution: Check filament voltage, replace driver capacitors, replace VFD if necessary.
#6 Remote Control Not Working
Symptom: No response to remote commands.
My Solution: Check IR sensor on front panel, replace electrolytic caps on control board, verify remote transmitter.
#7 Input Switching Issues
Symptom: Input not switching, intermittent connection, noise when switching.
My Solution: Replace input relays, clean contacts, check control logic.
Mark Levinson No. 32 – Component Overhaul Database
⚠️ Typical restoration: 80-120 electrolytic capacitors replaced across both chassis. I use premium Japanese and USA-made audio-grade components.
POWER SUPPLY CHASSIS
| Component | Original Type | My Restoration Replacement |
|---|
| Main Filter Caps | 4700-10000µF @ 35-63V | High-ripple, 105°C (Nichicon KG / Cornell) |
| Regulator Board Caps | 47-1000µF @ 16-50V | Low Impedance, 105°C (Panasonic FC / Nichicon PW) |
| Small Signal Caps | 10-100µF @ 16V | Audio Grade (Nichicon FG / Elna Silmic II) |
AUDIO CHASSIS – SIGNAL PATH
| Section | Capacitor Count | My Replacement |
|---|
| Audio Board Decoupling | 20-30 caps | Low ESR + Film bypass (Nichicon FG / WIMA) |
| Gain Modules (per channel) | 8-12 caps each | Audio Grade (Nichicon FG / Elna Silmic II) |
| Volume Control Logic | 5-10 caps | Low Leakage (Nichicon KL / UKL) |
CONTROL & DISPLAY BOARD
| Component | Original | My Upgrade |
|---|
| Microprocessor Supply | 47-470µF Electrolytic | Low ESR, Long Life (Panasonic FM) |
| VFD Driver Caps | 10-100µF Electrolytic | 105°C, High Ripple (Nichicon PW) |
| Reset Circuit Caps | 1-10µF Tantalum | Solid Tantalum or Low ESR Electrolytic |
Precision Calibration & Alignment Procedure
🎛️ MY CALIBRATION PROCESS FOR NO. 32:
- Power Supply Verification: I measure all voltage rails (analog ±15V, ±24V; digital +5V, +3.3V) to within ±1% tolerance.
- DC Offset Adjustment: Using a precision DMM, I adjust DC offset at main outputs to <±1mV.
- Channel Matching: I verify gain matching between left and right channels within ±0.05dB across the entire frequency range.
- Volume Control Tracking: I test volume step accuracy and channel tracking from minimum to maximum, ensuring <0.5dB tracking error.
- Gain Module Calibration: For adjustable gain modules, I set gain precisely to factory specifications.
- Distortion Measurement: I measure THD+N at various frequencies and levels, targeting <0.001% at 1kHz.
- Noise Floor: I verify signal-to-noise ratio >115dB A-weighted.
💡 NOTE: Proper calibration requires precision test equipment (DMM, oscilloscope, distortion analyzer, audio generator). I have all the tools and 30+ years of experience to restore your No. 32 to reference-grade performance.
Mark Levinson No. 32 Reference Specifications
| Parameter | Specification |
|---|
| Frequency Response | ±0.1dB, 2Hz-100kHz |
| THD+N | <0.001% (20Hz-20kHz) |
| Signal-to-Noise Ratio | >115dB (A-weighted) |
| Channel Separation | >110dB (1kHz) |
| Gain Range | 0dB to +20dB (selectable) |
| Volume Control | R-2R ladder, 0.1dB steps |
| Inputs/Outputs | Balanced XLR, Single-ended RCA |
| Chassis Configuration | Dual-chassis (separate power supply) |
Frequently Asked Questions – Mark Levinson No. 32
❓ What makes the No. 32 Reference so special?
The No. 32 features a dual-chassis design, fully discrete balanced dual-mono topology, and a legendary R-2R ladder volume control. It set the standard for reference preamplifiers in the 2000s and remains highly prized for its transparency and musicality.
❓ How long does a full restoration take?
Typically 3-5 weeks due to the dual-chassis complexity and calibration requirements. Rush service available.
❓ Do you offer nationwide service?
Yes! I serve customers nationwide. You can ship your No. 32 to my Los Angeles facility securely. I provide detailed shipping instructions and insurance guidance.
❓ Can you replace the gain modules if needed?
I can service and repair existing gain modules. Replacement modules are sometimes available through my parts network.
❓ Do you have spare parts for the No. 32?
Yes, I've accumulated a stock of relays, capacitors, and some proprietary components for the No. 32 over 30 years.
❓ Do you warranty your work?
Yes, 90-day warranty on all parts and labor. I stand behind every restoration.
❓ How do I ship my No. 32 safely?
I provide detailed packing instructions for the dual-chassis design. Double-boxing with adequate padding is essential. I recommend insurance for high-value shipments.
My Service Area – Local & Nationwide
🇺🇸 NATIONWIDE SERVICE AVAILABLE 🇺🇸
Ship your Mark Levinson No. 32 securely to my Los Angeles facility – I serve customers across all 50 states
Local Service: Los Angeles County, Orange County, Ventura County, Riverside County, San Bernardino County, and surrounding Southern California areas. Local pickup and delivery available.
Nationwide Service: For customers outside Southern California, I offer secure shipping options. I provide detailed packing instructions and work with fully insured carriers to ensure your valuable No. 32 arrives safely. I've restored equipment for clients across the United States.
Los Angeles County: LA Burbank Glendale Santa Monica Hollywood Pasadena Beverly Hills
Orange County: Santa Ana Anaheim Irvine Costa Mesa Newport Beach
Nationwide Shipping: New York Texas Florida Illinois Colorado Washington All 50 States
TEK Media Group — High-End Audio Restoration Since 1994
📞 (818) 244-4440 | ✉️ service@tekmediagroup.com
Serving Los Angeles, Orange County, Ventura, Riverside, San Bernardino, and nationwide via secure shipping
Specializing in Mark Levinson, Krell, Audio Research, McIntosh, and High-End Reference Components
Mark Levinson No. 32 Reference Preamplifier Specialist • Nationwide Restoration Expert
