




MANLEY SLAM! Mastering Version
MRP - Rs. 13,36,000
MANLEY SLAM! Mastering Version: stereo tube mastering limiter with ELOP® optical and FET brick-wall limiting for loud, punchy masters. Available in India from Shivansh Electronics, Kolkata, West Bengal, India.
VISUAL GUIDE — See Every Photo, Spec & Setup Step (PDF)
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Tubes and I/O (Mastering Version)
| Input tubes | 2 x 12AT7A, specially selected by MANLEY for low noise and stable bias |
| Output tubes | 2 x 12BH7 (or 6414W) dual triodes |
| Balanced XLR line I/O | MANLEY IRON® transformer‑coupled balanced inputs and outputs |
| Input impedance, balanced (XLR combo jack) | 2 kΩ |
| Input impedance, unbalanced (1/4" combo jack) | 10 kΩ |
| Maximum limiter gain | 20 dB |
| Output impedance | 200 Ω |
Limiters and performance
| FET limiter | Attack approx. 100 µs; release 10 ms to 2 s; ratio better than 20:1 |
| ELOP® limiter | Attack approx. 10 ms for 6 dB gain reduction; release 2.5 s; ratio 10:1 |
| Frequency response | 5 Hz to 60 kHz |
| Maximum output | +32 dBm; +30 dBm into 1 kΩ load |
| THD+N | < 0.05 % at 1 kHz |
| Dynamic range | 115 dB typical |
Power and physical
| Power consumption | 57.6 W (0.48 A at 120 V; 0.24 A at 240 V) |
| Outboard power supply | Factory set for 100 V, 120 V or 220‑240 V AC (destination country) |
| Changing the mains voltage | Power transformer re‑wiring via switch and fuse value change |
| Mains fuse | 2 A (100‑120 V) or 1 A (220‑240 V) |
| Mains frequency | 50/60 Hz |
| Size | 483 x 305 x 89 mm (19" x 12" x 3.5"), 2U |
| Shipping weight | 11.3 kg (25 lb) |
Product overview
The MANLEY SLAM! Mastering Version is a stereo mastering limiter: the ultimate mastering tool for loudness, punch and integrity.
The analogue authority for loud and punchy masters, the SLAM! Mastering Version takes control of dynamics and loudness with two distinct and simultaneous limiters, the musical ELOP® and the fast FET brick-wall limiter. Its high-headroom tube design is optimised for digital conversion: an engineer's dream for punchy and loud masters.
| Dual‑stage limiting | ELOP® + FET |
| Dynamic range (typical) | 115 dB |
| Frequency response | 5 Hz‑60 kHz |
| THD+N at 1 kHz | < 0.05 % |
Key features
- Dual mastering limiter for stereo programme
- ELOP® optical and FET brick-wall limiters, working simultaneously
- MANLEY IRON® transformer-coupled balanced line inputs and outputs
- XLR / 1/4" combo inputs: 2 kΩ balanced, 10 kΩ unbalanced
- Up to 20 dB of limiter gain
- High-headroom design optimised for digital conversion
- Mini-patchbay for side-chain inserts
- Attenuable VU meters, switchable to prevent needle bending
- Outboard power supply
Two limiters, one purpose
The SLAM! uses a dual-stage limiting process for unparalleled dynamic control. The ELOP® optical limiter, renowned for transparent and effortless gain reduction, provides smooth, musical compression. It is followed by a lightning-fast FET limiter that catches the final peaks, creating loudness without the harsh artefacts of digital clipping.
Made for mastering
Its transparent sound and the combination of two limiter types add loudness and density to a final mix without unwanted artefacts. Balanced I/O and high headroom handle the full dynamic range of a stereo mix with pristine clarity, and the musical ELOP® and powerful FET give mastering engineers precise control over the dynamics and loudness of a track.
Built for sonics, engineered for performance
The SLAM! is built to perform in the most demanding studios. Its outboard power supply keeps heat and magnetic fields away from the sensitive audio circuitry for a pristine signal path. Flexible I/O, a mini-patchbay for side-chain inserts and attenuable VU meters make it a robust and reliable tool for a lifetime of professional use.
In the box
- MANLEY SLAM! Mastering Version
- Outboard power supply
MANLEY SLAM! Mastering Version: frequently asked questions
What is the difference between the ELOP® and FET limiters?
The ELOP® uses a passive optical cell for smooth, transparent and musical gain reduction. The FET is an aggressive brick-wall limiter that catches fast transient peaks and prevents digital clipping. In tandem, the ELOP® levels gently and the FET catches the remaining peaks.
How does it differ from the standard SLAM!?
The Mastering Version's official specification lists line inputs on XLR / 1/4" combo jacks (2 kΩ balanced, 10 kΩ unbalanced) and up to 20 dB of limiter gain; the mic preamp and DI specifications of the standard SLAM! are not part of it.
Why an outboard power supply?
It keeps the high-voltage transformers and power conditioning away from the low-level audio path, preventing magnetic fields and heat from interfering, for a cleaner, quieter signal with a lower noise floor.
Which mains voltage does it use?
The outboard supply is factory set for 100 V, 120 V or 220-240 V AC for the destination country; the voltage can be changed by power transformer re-wiring via a switch and a fuse value change.
Where can I buy the MANLEY SLAM! Mastering Version in India?
The MANLEY SLAM! Mastering Version is available from Shivansh Electronics, Kolkata, West Bengal, India, with delivery across India.
Workflow 1: Stereo mastering for loudness
Raising the level of a finished mix without clipping.
Connections
| Connect | To |
|---|---|
| Playback converter left / right | Channel 1 / 2 balanced inputs |
| Channel 1 / 2 balanced outputs | Recording converter |
Setup
- Link the two channels for stereo.
- Set the ELOP® limiter for gentle levelling.
- Raise the FET limiter to catch the final peaks.
- Set the output for the converter.
Tip: Watch the VU meters and switch their attenuation for hot levels.
Workflow 2: Glue without loudness
Gentle density on a dynamic master.
Connections
| Connect | To |
|---|---|
| Playback | Balanced inputs |
| Balanced outputs | Recorder |
Setup
- Use only the ELOP® limiter.
- Aim for a few dB of gain reduction.
- Leave the FET at its threshold limit.
- Compare at matched level.
Tip: The ELOP® ratio is 10:1 with a 2.5 s release.
Workflow 3: Peak control only
Catching transients before the converter.
Connections
| Connect | To |
|---|---|
| Playback | Balanced inputs |
| Balanced outputs | Converter |
Setup
- Set the ELOP® to minimum action.
- Lower the FET threshold until only peaks are caught.
- Choose the FET release.
- Check for artefact-free results.
Tip: The FET attack is about 100 µs, ratio better than 20:1.
Workflow 4: Side-chain filtering
Stopping heavy low end from driving the limiters.
Connections
| Connect | To |
|---|---|
| Side‑chain send | External filter or EQ |
| External processor output | Side‑chain return |
Setup
- Patch the side-chain insert on the mini-patchbay.
- Shape the detector signal with the external processor.
- Set the limiter thresholds.
- Listen for pumping.
Tip: The mini-patchbay offers side-chain inserts.
Workflow 5: Stem or mix bus limiting
Controlling a stereo stem during mixing.
Connections
| Connect | To |
|---|---|
| Bus insert send | Balanced inputs |
| Balanced outputs | Bus insert return |
Setup
- Insert the SLAM! on the bus.
- Set ELOP® for glue.
- Set FET for safety.
- Trim the output gain.
Tip: Up to 20 dB of limiter gain is available.
Workflow 6: Unbalanced sources
Feeding unbalanced playback equipment.
Connections
| Connect | To |
|---|---|
| Unbalanced output | 1/4" combo input |
| Balanced output | Converter |
Setup
- Connect via the 1/4" part of the combo jacks.
- Set the input level.
- Limit as usual.
- Record the result.
Tip: The unbalanced input impedance is 10 kΩ.








