Always fresh, never frozen!
In 2002 we launched a very tasty all-tube 100 watt monoblock called The Snapper® (oceanic names continuing). At $7,250 per pair for stereo playback, we also welcome you to catch a school of Snappers for surround systems.
Another brilliant design from Mitch Margolis features a quartet of EL34 or 6CA7 or KT77's in a fully differential circuit topology, including the input and driver stages. This Snapper can be driven fully balanced all the way through via the XLR inputs. If you have balanced outputs on your preamplifier, this amplifier is the first Manley design to really let you take advantage of your XLR's without additional balancing input circuitry or input transformers. Very cleverly, the unbalanced RCA's can alternatively be used in this special topology with equally impressive results.
Biasing is easy with all measurement points and trimpots located on the top deck and speaker connection is made with heavy duty WBT binding posts.
Over three months of prototyping in the Manley Magnetics department resulted in a brand new output transformer design, a true 19-section incredibly complicated piece. The Snapper will crank out 100 watts at 10 cycles all day long and a full 110 watts from about 15Hz all the way up to 40KHz. Don't let frequency response specs fool you when people give you amazing bandwidth measured at... oh, five puny watts. We're talking full power bandwidth here! Continuous duty. Real muscle.
The Manley Snapper An EveAnna Manley production, Designed by Mitch Margolis, Mastered by Baltazar Hernandez. Handcrafted with pride in Chino, California, USA!
Get the owner's manual for the Manley Snapper®
Features and Specifications
- 100 Watt partial triode (UltraLinear) EL-34 output stage is tolerant of a wider
variety of output load conditions than pure pentode.
- Precise and balanced signal path from input to output. Circuit
self-balances with either single-ended or balanced inputs. [Don't let
either speaker terminal contact chassis, earth or any other ground.
- Switch-selectable RCA unbalanced inputs, or XLR balanced inputs. RCA
jack input impedance about 330 kOhms, XLR 15 kOhms. If one
input is not occupied, the input selector switch may then be used as a
poor-man's MUTE switch. Handy for checking the bias, swapping input cables, etc..
- Input Sensitivity RCA jack: 750 mV RMS for full output into 5 Ohms
- Input Sensitivity RCA jack: 71 mV RMS for 1 watt output into 8 Ohms
- Input Sensitivity XLR jack: 1.5 V RMS for full output into 5 Ohms
- Overall voltage gain RCA jack to Output: 31 dBu, or about 32 volts per volt.
- Signal to A-weighted noise ratio on Humberto's bench is about 110 dB.
- Damping Factor: 4.7
- All-balanced amp topology keeps B+ voltage variations from degrading
the performance of the input and driver stages. This technique can
help make a push-pull amplifier very revealing of signal detail, in
part by canceling power-supply-related perturbations and increasing
- Portly 180 Joule energy storage reservoir in the main B+ supply
channel for explosive transient response and athletic musical stamina.
Also reduces B+ fluctuations due to varying current demands of output
- Wideband transformerless balanced input with bridged
15 kOhm input impedance. Balanced input
sensitivity may be selected by changing one resistor to suit whatever
operating level may be required. 0 dBu, +4, +8, etc... If desired, the
user may safely ground either pin 2 or 3 for single-ended drive of the
balanced XLR input... [Be careful NOT to drive pins 2 and 3 of the XLR
with a large common-mode signal, or the internal B+ fuse could blow.]
- Quiet DC supply for the input and driver tube filaments.
- Excellent square-wave response, and very low excess phase-shift with
- Amp actually puts out 110W @ 5 Ohm load @ 2 kHz @ onset of clipping,
117 VAC mains voltage, 3.5 amps mains current.
- 100 W spec: 15 Hz - 40 kHz into 5 Ohms
- Puts out 100W into an 8 Ohm load.
- Snapper unit weight: 38 lbs.
Rear View Detail
Snapper gutz. Undercarriage view. Naked.
You can see the big chassis strengthening strut inside so the heavy transformers won't cave the chassis in if UPS throws it off an airplane...
NOTE: As of early 2008, the B+ fuse value has been changed
FROM 0.4A (4/10th Amp or 400mA) TO 0.5A (1/2 Amp or 500mA).
Same type and location inside the amplifier. MDA 1/2A Ceramic SLO-BLO 1/4" x 1 1/4"
Applies to all Snappers.
Users with existing Snappers fitted with 4/10th Amp B+ fuses can uprate their fuses to the new higher amperage part should their 4/10th amp fuse blow. No need to change to 1/2A part until/if existing 4/10th Amp fuse blows.
Features and Specifications
- Input Impedance RCA: 475 kOhm
- Input Impedance XLR: 15 kOhm (or 600 Ohm switchable on units before MSN524)
- Input Sensitivity RCA: 750mV input = 110W output
- Input Sensitivity XLR @ 15 kOhms: 1.5 V input = 110W output
- Input Sensitivity XLR @ 600 Ohms: 2.4 V input = 110W output (w/600 Ohm source)
- Gain RCA: factory set for 31 dB; Range = 29.5 to 34.5dB
- Gain XLR: factory set for 25 dB
- Negative Feedback: factory set for 9dB of global NFB
- Maximum Output Power into 5 Ohms: 110 Watts (1.5% THD @ 1kHz)
- Maximum Output Power into 8 Ohms: 100 Watts (1.5% THD @ 1kHz)
- Signal to Noise Ratio Ref. 1W: Typically 90 dB A-WGT 20-20K
- Noise Floor: Typically 105V = -77dBu A-WGT; Typically 388V = -66dBu unweighted
- Will Scratch Your Floor: Use pennies under pointed feet to avoid marring cabinetry. Try quarters if you are in upper tax brackets. The bargain performer would be nickels. Paper currency does not function as well. Euro coins work 1.54 times better.
- Dynamic Range: 98dB
- THD+noise @ 1W: less than 0.1%
- Frequency Response at 110W full power: 15 Hz to 40 kHz FLAT
- Frequency Response at 5W into 5 Ohms: 10 Hz to 65 kHz FLAT, -3dB @ 100KHz
- Recommended Speaker Load: Optimized for 5 Ohms
- Actual Output Impedance: 1.5 Ohms
- Power Consumption (idle): 170 Watts (1.4A @120VAC)
- Power Consumption (at Full Power 110W): 336 Watts (2.8A @120VAC)
- Operating Mains Voltage: Factory set for 100V, 120V or 220-240VAC operation for original destination country's mains voltage.
- Operating Mains Voltage: changeable with power transformer re-wiring and fuse value change.
- Mains Voltage Frequency: 50~60Hz
- Input Vacuum Tube: 1 x 12AX7 Russian with 6CA7 or KT77 output tubes; use 12AT7EH large plate Electro-Harmonix Russian with EL34 types
- Driver Vacuum Tube: 1 x 7044 or 5687 GE JAN NOS
- Output Vacuum Tubes: 4 x 6CA7 (or EL34 equavalent)
- B+ Voltage: 570V DC
- Output Tube Quiescent Standing Current: 30mA
- Set Bias for: 300mVDC measured across 10 Ohm cathode resistor
- Lamp type: "FuseLamp" size 1/4" X 1 1/4", 12 volt, 0.15 amp; Units built after 5/2003 use white LEDs
- Fuse values & types for: 120VAC operation: MDL or MDA 5 AMP / 250 Volt SLO-BLO size 1/4" X 1 1/4"
240VAC operation: MDL or MDA 3.15 AMP/ 250 Volt SLO-BLO size 1/4" X 1 1/4" B+ FUSE: MDA 1/2 AMP, 250 Volt SLO-BLO CERAMIC BODY size 1/4" X 1 1/4"
- Dimensions: 15" deep x 13" wide x 8.75" tall
- Shipping weight each: 45 pounds
Specifications subject to change because they just might.
On the cover of Image Hifi January/February 2006 in Germany
The test report puts the SNAPPERS second to none in their category.
Roland Kraft: "They are without any doubt the quickest, liveliest and most
thrilling high performance tube amps I have ever encountered. They may not
be quite as colorful as triodes, however offer a bass foundation that
triodes are never able to deliver."
Always having lots of fun at Manley Labs!
SNAPPER® is a registered trademark of Manley Laboratories, Inc.