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IntroductionAudio Mirror
LC Audio
Marchand
JOB
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Go to….IntroductionAudio Mirror LC Audio Marchand JOB |
Monoblock amplifiers: |
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The following amplifiers are monoblocks (some are kits), not normally available
through usual hi-fi distribution, but which have been recommended for DIY use
Listed alphabetically by manufacturer. Audio Mirror is a
tube/valve design, while the LC, Marchand,
and JOB design are all SS. All are world-class. Also note that one entry is conspicuous by its omission… Borbely Audio makes some of the most highly regarded amplifier kits around, both stereo and monoblock, using either FET or tube/valve technology (the highly acclaimed Sierra amps are all Borbely designs). By all rights they should be included here. However, Borbely's "kits" are for experienced builders only! They come with printed circuit boards, components, and schematics, but no pre-drilled chassis or heatsinks. Borbely assumes that you can read schematics (there are no step-by-step instructions), are familiar with the components, know how to solder, and can therefore populate and complete the boards without assistance. Also, the designs are complex and if your Borbely amp doesn't work the first time, troubleshooting is a job best left to someone with both more experience and test equipment than the casual hobbyist. If this description doesn't scare you off, then by all means, check them out - all of their gear has been recommended. |
Audio Mirror: |
Audio Mirror's tube/valve amplifiers have shown up a many DIY events. By all
accounts, they're excellent, winning over some grudging converts to acceptance of
tube/valve electronics.
1. 20 W SET monoblock - 20 W @ 8 Ω - class A.
Price: $840/each (sold in pairs).
Features: Power bandwidth = 20 Hz - 41 kHz, +0/-1 dB
THD = <0.8%
S/N = >90 dB
Slew rate = N.A.
Damping factor = N.A.
Input impedance = N.A.
Input sensitivity = 1.2 V
Size: N.A.
Weight: N.A.
2. 40 W SET monoblock - 40 W @ 8 Ω - class A.
Price: $1,145/each (sold in pairs).
Features: Power bandwidth = 20 Hz - 58 kHz, +0/-1 dB
THD = <0.8%
S/N = >90 dB
Slew rate = N.A.
Damping factor = N.A.
Input impedance = N.A.
Input sensitivity = 1.2 V
Size: N.A.
Weight: N.A.
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LC Audio: |
1. ZAPsolute Mk4.1 - 118 W mono @ 8 Ω, Sanken bipolar, class A.
Price: $5,286.
Features: Power bandwidth = 25 Hz - 35 kHz
THD = <0.03%
S/N = 110 dB
Slew rate = N.A.
Damping factor = N.A.
Input impedance = N.A.
Input sensitivity = N.A.
Power supply: None
Size: 17 x 6.5 x 18 in. (431.8 x 165.1 x 457.2)
Weight: 42 lbs. (20 kg)
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Marchand: |
Marchand sells most of their products assembled, as kits, or as EZ kits (most
of the hard work already done).
1. MB401 400 W @ 4 Ω, 300 W @ 8 Ω - MOSFET, class AB
Price: $990 kit, $1,200 EZ kit, $1,850 assembled
Features: Power bandwidth = 10 Hz - 20 kHz, ± 1 dB
THD = 0.02%
S/N = N.A.
Slew rate = 100 V/usec
Damping factor = N.A.
Input impedance = 50 KΩ
Input sensitivity = N.A.
Size: 17 x 3.5 x 12.5 in. (431.8 x 88.9 x 317.5 mm)
Weight: N.A.
2. MB501 200 W @ 4 Ω, 125 W @ 8 Ω - MOSFET, class AB
Price: $599 kit, $799 EZ kit, $999 assembled
Features: Power bandwidth = 10 Hz - 20 kHz
THD = 0.02%
S/N = N.A.
Slew rate = N.A.
Damping factor = N.A.
Input impedance = 25 KΩ
Input sensitivity = N.A.
Size: 7.75 x 5 x 12.5 in. (197 x 127 x 317.5 mm)
Weight: N.A.
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JOB: |
JOB amplifiers, from Switzerland, are little-known, but highly respected
professional amplifiers. JOB makes both monoblock and stereo amplifiers, all
extremely compact and with exceptionally high bandwidth.
1. The JOB Mono - 80 W @ 2-8 Ω - type and class not stated
Price: $1,250
Features: Power bandwidth = 6 Hz - 600 kHz, ±1 dB
THD = <0.01%
S/N = >100 dB
Slew rate = >240 V/usec
Damping factor = N.A.
Input impedance = 3-10 k, depending on level setting
Input sensitivity = 0.75 V
Size: 5.9 x 9.8 x 1.96 in. (150 x 250 x 50 mm)
Weight: 7.7 lbs. (3.5 Kg)
2. JOB 150 - 150 W @ 2-8 Ω - type and class not stated
Price: $950
Features: Power bandwidth = 6 Hz - 400 kHz, ±1 dB
THD = <0.01%
S/N = >105 dB
Slew rate = >240 V/usec
Damping factor = N.A.
Input impedance = 50 k
Input sensitivity = 1.4 V
Size: 5.9 x 7.9 x 1.96 in. (125 x 200 x 50 mm)
Weight: 8.8 lbs. (4 Kg)
3. JOB 300 - 200 W @ 2-8 Ω - type and class not stated
Price: $950
Features: Power bandwidth = 6 Hz - 400 kHz, ±1 dB
THD = <0.01%
S/N = >105 dB
Slew rate = >240 V/usec
Damping factor = N.A.
Input impedance = 50 k
Input sensitivity = 1.4 V
Size: 5.9 x 7.9 x 3.93 in. (125 x 200 x 100 mm)
Weight: 9.9 lbs. (4.5 Kg)
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