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JM Sound

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Posts posted by JM Sound

  1. Magnus Audio MA380


    NEW FOR 2021/ DEMO UNIT. List $8995
    MA-380 Highlights

    Advance and sophisticated pure Class AB design with supreme sonic performance.

    6 pairs carefully selected and matched Bipolar Power Transistors of highest quality.

    Custom wound audio grade toroidal transformer with separate windings for left and right channel.

    Custom made heavy-duty heat sinks with special thick rib design ensure a lower operating temperature.

    Sophisticated protective circuit ensures highest operational safety for the amplifier and the connected loudspeakers.

    Integrated power curcuit with time-delay relay to eliminate turn-on thump.

    Advance layout and wiring techniques guarantee a hum free operation.

    Switchable balanced (XLR) and single-ended (RCA) inputs.

    Full metal housing for optimum shielding.

    100% Handcrafted in California, USA.

    Each of the MA-380 power amplifier has a unique serial number for authenticity.

    Specifications

    Rated Output Power: 150 Watts RMS at 8 Ohms
    300 Watts RMS at 4 Ohms
    Frequency Response: +/- 0.1 dB from 10 Hz to 50 kHz
    Signal-to-Noise Ratio: 110 dB
    Total Harmonic Distortion (THD): <0.016%
    Gain: 28.9 dB
    Input Impedance: 33k Ohms (single-ended)
    47k Ohms (balanced)
    Input Sensitivity: 1.25 V RMS
    Output Voltage: 31 V RMS
    Damping Factor: 220, reference 8 Ohms nominal
    Power Consumption: 580 watts continuous
    Inputs: 2 balanced via XLR connector (1 per channel)
    2 single-ended via RCA connector (1 per channel)
    Outputs: 2 pairs high quality binding posts (1 pair per channel)
    Operating Voltage: 100V, 120V, 220V, 230V or 240V at 50 or 60 Hz
    Dimensions: 19 in. W x 6 in. H x 17 in. D
    Weight: 60 lbs.
    Warranty: 2 Years Parts and Labor


    • Seller
      JM Sound
    • Date
      05/11/21
    • Price
      4,895.00 USD
    • Category

     

  2. PBN Audio M2!5


    Piano black, 1 year old

    Specifications

    • Driver Complement: LF: 2 each 15” Woofers, MF/HF: 1 each Dual Diaphragm Compression Driver mounted on WaveGuide
    • Crossover: 5th Order Charge coupled with 3 x 9V (27V) @ 900 Hz
    • Crossover Capacitors: High Voltage (400VDC) Metalized Polypropylene
    • Sensitivity: 95dB / 2.83V /1M
    • Frequency Response: 25Hz to 20kHz +/- 2dB
    • Impedance Nominal: 4 Ohms (min. 3.5 Ohms, max. 9 Ohms)
    • Dimensions 53"H x 18"W x 23"D
    • Weight: 280 lbs
    • Finish: Custom order

    M2!5 Loudspeakers

    Retail: $30,000 a pair


    • Seller
      JM Sound
    • Date
      02/15/21
    • Price
      18,900.00 USD
    • Category

     

  3. Mark Audio Alpair 12P


    LOCAL PREFERRED- perfect for single ended amps, custom built cabinets with swivel base
    JM Sound/ Redondo Beach

    From manufacturer's site:
    The Alpair 12P is the largest full-range driver produced by Markaudio. This driver is a development unit following on from the original metal coned Alpair 12 produced in 2009/2010. Several major design changes make this Alpair radically different from the original in terms of its operation and performance.

    Brief
    Markaudio Alpair series drivers are completely custom designed and built. All components (apart from the magnet) are individually designed and engineered with their own tooling and mould making sets. Alpair drivers are made by highly skilled engineers; they are not “mass produced”.

    Key Features
    The change to a custom paper cone with a more shallow profile reduces mass and increases dispersion performance. The new cone is only 21-mm deep compared to the metal unit at 26- mm. The 12P employs a new custom CCAW coil with an aluminum/paper wrap, vented, low mass thin-walled body. The spider is particularly special. Designed by Matsubara San, it employs a new long throw profile set together with a ribbed body to maintain linearity. The front suspension remains the same as the previous model; designed by Lu Yi Ping, its ultra thin wall doesn't support the cone. In terms of mechanical load performance, the 12P remains a single semi-free to air driver, possibly a unique design in its class (see description and picture below).

    Performance
    The 12P remains pure to designer Mark Fenlon's current criterion which is to make purist, single cone drivers that are full-range capable without the use of phase plugs, co-axial centre tweeters or whizzers. The 12P is 92dB efficient (1w/m2), operating to 22-kHz (-3dB) and having a resonance frequency of 42Hz (+/- 2Hz). The 12Pʼs power-train (cone, cap, coil and suspensions) is mechanically efficient and linear, requiring only modest powered amps to make it perform well. This driver is aimed strictly at the “audiophile” end of the market. Its cone is highly-resonance sensitive so clean low-distortion amplification and source components are advised.


    • Seller
      JM Sound
    • Date
      02/04/21
    • Price
      895.00 USD
    • Category

     

  4. Definitive Technology BP8060


    LOCAL ONLY/ so cal
    Forward Focused Bipolar Array™ technology for lifelike imaging and pinpoint localization Balanced Dual Surround System (BDSS) driver technology places rubber surrounds on both the outer and inner edges of each speaker cone for improved clarity frequency response 20-30,000 Hz (±3 dB) sensitivity 92 dB 8-ohm impedance handles up to 300 watts front array: dual 4-1/2" mids and 1" pure aluminum dome tweeter rear array: 4-1/2" mid and 1" pure aluminum dome tweeter 10" woofer with dual 10" passive radiators built-in 300-watt subwoofer amp one set of 5-way binding posts high-gloss black finish on top and bottom caps with cloth grille-wrapped enclosure 11-1/8"W x 44-1/4"H x 14-1/16"D List $2000

    • Seller
      JM Sound
    • Date
      01/28/21
    • Price
      575.00 USD
    • Category

     

  5. Canary Audio C1300


    Retail $7900- reduced!! save over 50%
     Model incorporates the sonic virtues of the 2 chassis C1600 into a single chassis unit.

    The C1300 is the single chassis version of our highly regarded two chassis preamplifier. It employs an advanced circuitry and high quality components to provide outstanding musical reproduction of your favorite music.

    Like our other products, the C1300 is engineered and built to provide a lifetime of musical enjoyment. The circuitry components used in the C1300 are carefully chosen and hand soldered on the military grade epoxy circuit boards.
    C1300 Preamplifier Features:

    The power supply circuit uses GZ34, 6V6 and 6SL7 as rectifier.

    The preamp circuit features the use of two 12AX7 and two 12AU7 tubes for a low noise operation.

    Rectifier with choke filtering.

    Custom EI power transformer.

    Swiss made ELMA selector switches with gold-plated contacts.


    Four pairs of single-ended inputs and two pairs of outputs are installed for ease of connectivity.
    SPECIFICATIONS

    Input Impedance: 45,000 Ohms min,110,000 Ohms max
    Output Impedance: 1,400 Ohms
    Maximum Gain: 9 dB
    Frequency Response: +/- 1 dB from 5 Hz to 110,000 Hz
    Hum and Noise: -80 dB
    Maximum Output Voltage before Clipping: 30 Volts
    Total Harmonic Distortion: < 0.04%
    Power Consumption: 35 Watts (true RMS)
    Tube Complement: 2 x 12AU7
    2 x 12AX7
    1 x 5AR4
    1 x 6SL7
    1 x 6V6
    Dimensions: 18.75" W x 14.25" D x 5.50"H
    Net Weight: 35 lbs


    • Seller
      JM Sound
    • Date
      01/28/21
    • Price
      3,650.00 USD
    • Category

     

  6. KEF Reference 104.2


    LOCAL ONLY/ so cal
    Work fine, original version with rubber surround woofers, grills are rough
    MPN 1984-96
    Model Model 104/2
    eBay Product ID (ePID) 114774308
     
    Product Key Features
    Connectivity Wired
     
    Additional Product Features
    Speaker Type Loudspeaker
    Peak Power Handling 200w
    Sensitivity 92dB
    Impedance 4ohm
    Frequency Responses 55Hz-20kHz
    Construction 3-Way

    • Seller
      JM Sound
    • Date
      01/25/21
    • Price
      585.00 USD
    • Category

     

  7. PBN Audio Lucille


    LOCAL ONLY/ CABINETS HAVE FLAW. List $7500

    High-definition, full-range front speaker to satisfy music aficionados as well as devotees of home theater. Its superbly balanced sound reproduction heralds PBN’s entry into the high-end, floor-standing speaker market. Measures 12”W x 13”D x 41”H.

    Driver Complement

    • HF = 1” Ring Radiator
    • LF/MF = 7.5” Reed Cone MidWoofer
    • Sensitivity = 91dB/2.83V/1M
    • Crossover point = 2kHz /24dB /Oct
    • Impedance Nominal 4 ohms
    • (min 2.5 Ohm / max 7.5 Ohm)

    • Seller
      JM Sound
    • Date
      01/12/21
    • Price
      2,150.00 USD
    • Category

     

  8. Lexicon MC 12B


    Like new in box with manual, remote, microphones, retail $14,000

    LOGIC7®

    Dolby® Digital

    Dolby® Pro Logic II

    Dolby® Pro Logic

    THX Surround EX™

    DTS® ES Discrete

    DTS® Neo:6

    3 Independent Zones (Main, Zone2, Record)

    THX® Ultra Certified

    Broadcast Quality video switching

    4 Analog Devices SHARC® 32-bit DSP engines

    24-bit/96kHz internal processing

    24-bit/192kHz D/A converters

    Cirrus Logic's Crystal® CS49326 DSP decoder

    Analog pass-through

    RS-232 upgradeable software

    3 internal slots and rear panel options plate

    3 trigger outputs (2 programmable triggers)

    rack-mount option

    Dimensions: 17.3"W x 5.2"H (6.65" balanced version) x 14.85"D

    Weight: approx. 36 lbs. (approx. 42 lbs. balanced version) lbs.


    • Seller
      JM Sound
    • Date
      01/12/21
    • Price
      1,595.00 USD
    • Category

     

  9. Margules Audio SF220


    From Manufacturer's website:
    The MARGULES SF220 BLACK series combines the superior sound of vacuum tubes with innovative circuitry that pushes design boundaries with a fresh new aesthetic. The results are clearly apparent in its sound as a quick detailed dynamics, ultra-smooth transient response with an unprecedented reliability and beautiful contemporary design.The SF220's has very low output impedance, designed to drive optimally any amplifier regardless if is solid state or tubes.The Preamp’s wide and stable frequency response is maintained even with long cable runs, without softening or loss of detail which would normally be expected. The SF220 circuitry is designed to “strap” the input and output stage avoiding the use of negative feedback. The result is, load stability with precision, speed and dramatic transient response that gives a natural sound with reach detailed harmonics.Shunt Power supply and filament active damping.The SF220 BLACK EDITION includes a special SHUNT power supply. Shunt technology provides a dramatic improvement in Q damping, a key factor in overall performance, including smoother transient response and astonishing staging. Further improvements take place in quickness, macro and micro_dynamics, which make a life-like listening experi-ence.Our new Power Supply is virtually indestructible due to specially designed regulation technology that protects it from major tube failures. The filament supply is fully regulated and has an active damping control to minimize hum and microphonic effects of the tubes.The power supply is in a separate chamber within the chassis of the preamplifier to avoid noise induction.Remote controlBesides its IR remote control, the unit has RS232 connection to be controlled by any automation system or our web server.All the functions of the SF220 BLACK EDITION are discreet, including the ON and OFF function.The SF220's advanced design is complemented by the use of premium components. The PC board is silver-plated for maximum conductivity, Precision resistors, and premium audio grade capacitors.The SF220 BLACK is clean and effortless-sounding that it brings out the best in any power amplifier.New Aesthetics.The SF 220 BLACK has a new gloss black finishes, tubes blue led lighting, and engraved front panel and front push buttons control, featuring new Tzalam hardwood panel boardsFrequency response:5-400 khzTotal harmonic distortion:<0.014% maxMaximum output level:30 vSignal to noise ratio:4 OhmGain:6 dBRaise time:6 micro segundosFall time:6 micro segundosPower consumption (max):55 wWeight:14kgDimentions (height, width, depth):16 cm x 45cm x 36cm
    Only a few hours use, used in 2019 CES show

    • Seller
      JM Sound
    • Date
      01/06/21
    • Price
      2,795.00 USD
    • Category

     

  10. Audio Space AS-6M


    Details

    Condition

    Used - Like New

    Price is 1 pair(2 mono amps) Output power: 50W (ultralinear), 25W (triode) into 4 or 8 ohms at 20Hz-20KHz with <1% THD Input impedance: 68Kohms with S/N ratio of >89dB Output impedance: 4 or 8 ohm s (via separate binding posts) Frequency response: 20Hz - 20KHz +/- 0.5dB THD: <1% 20Hz - 20KHz (ref. output) Signal-to-noise ratio: >89dB (hum/noise <1mV) Tube complement: 1 x 6N9P (6SL7 or ECC35), 1 x 6N8P (6SN7 or ECC32), 2 x KT88


    • Seller
      JM Sound
    • Date
      01/02/21
    • Price
      1,750.00 USD
    • Category

     

  11. PBN Audio Alexander


    70% off!! List $10,000

    FEATURES:

    Subwoofers

    Extensively vented motor eliminates power compression and allows quiet excursion
    Lighter weight black anodized aluminum cone minimizes moving mass
    Two-layer coil for reduced back EMF
    Triple shorting-ring motor for ultra-low distortion
    Optimized for large enclosures
    Highest quality materials throughout for long-lasting performance

    AMT Tweeter

    Folded Kapton ribbon diaphragm delivers clean, detailed, and highly dynamic output
    Open-back design permits dipole or chamber loading
    Pro-level output and ruggedness for PA boxes, studio monitors, or high-efficiency home playback

    6.5” Midrange

    Klippel-optimized, high-performance design
    Powerful neodymium ring motor
    Kevlar-reinforced paper cone for excellent detail
    Perfect complement for ribbon and planar tweeters
    Wide bandwidth meets high 94 dB sensitivity

    1KW Amplifier

    High-power Class-AB output stage for clean, controlled output
    Patented tracking downconverter power supply for high efficiency
    Toroidal power supply transformer
    Low frequency parametric EQ allows you to boost or cut for custom-tailored sound
    Advanced soft clip circuitry improves headroom and protects woofers
    OTC™ (Optimized Thermal Circuit) protects your plate amplifier from potential heat damage
    Hercules heat sinks dissipate and control heat for ultimate reliability

    LOCAL PREFERRED
    JMSOUND (310)372-3487


    • Seller
      JM Sound
    • Date
      12/27/20
    • Price
      2,999.00 USD
    • Category

     

  12. McIntosh MC452


    SELLING "AS IS" Unit distorts after about 10 minutes play time
    LOCAL ONLY

    Power Output per Channel: 450W @ 2, 4 or 8 Ohms
    Number of Channels: 2
    Total Harmonic Distortion: 0.005%
    S/N below rated output: 122dB
    Dynamic Headroom: 1.8dB
    Damping Factor: >40 Wideband
    Rated Power Band: 20Hz to 20kHz
    Frequency Response: +0, -0.25dB from 20Hz to 20,000Hz; +0, -3.0dB from 10Hz to 100,000Hz

    Control

    Remote Power Control: Yes
    Multi-Channel DB25 Cable: N/A

    General Specifications

    Circuit Configuration: Quad Balanced
    Circuit Design: Transistor
    Mono Bridge: No
    Mono Parallel: No
    Autoformer: Yes
    Meters: Yes
    Meter Light Switch: Yes
    Balanced Input: Yes, and output
    Front Panel: Glass with handles
    Illumination: LED Fiber Optic
    Chassis Style: Open Stainless Steel
    Gold Plated Binding Posts: Yes, New Style McIntosh

    Weights & Dimensions

    Dimensions (W x H x D): 17-1/2" (44.45cm) x 9-7/16" (23.97cm)


    • Seller
      JM Sound
    • Date
      12/26/20
    • Price
      3,200.00 USD
    • Category

     

  13. Canary C630


    Latest version(unit has some demo use, warranty) retail $5995

    Input Impedance: 50,000 Ohms min, 95,000 Ohms max Output Impedance: 1,600 Ohms Maximum Gain: 9 dB Frequency Response: +/- 2 dB from 10 Hz to 76,500 Hz Hum and Noise: -80 dB Maximum Output Voltage before Clipping: 18 Volts Total Harmonic Distortion: < 0.08% Power Consumption: 30 Watts (true RMS) Tube Complement: 1 x EF86, 1 x 12BH7, 2 x 6922, 1 x 6FQ7 Dimensions: 17.5" W x 13.75" D x 4.5" H Net Weight: 22 lbs.


    • Seller
      JM Sound
    • Date
      12/17/20
    • Price
      2,495.00 USD
    • Category

     

  14. SST Son Of Ampzilla II


    This SST amp has Kimber internal wiring and wbt speaker posts which are upgrades done at the factory. Box & manual
    vFEATURES Fully balanced input-to-output with full four-quadrant differential push-pull feedback from both sides of the speaker.

    Double the number of power transistors per channel as the original Son of Ampzilla.

    Completely servo-controlled

    2000 VA power supply capacity with totally independent windings and power supplies for each channel

    100,000 µfd of power supply capacitance in twin supplies isolated for each channel

    Front end voltage amplifier power supplies are completely regulated

    Thermal protection/auto-shutdown

    Turn-on surge relay

    Thick steel chassis construction, powder coat finish. Anodized aluminum front panel

    Gold plated input and output connectors

    SPECIFICATIONS Power Output (per channel) 8Ω: Minimum 220 watts 20Hz–20kHz Frequency Response 20Hz–20kHz ± 0.1 dB THD (Awt) < 0.03% 20Hz–20kHz @ 8Ω Full power Noise (Awt) 45µV Input Impedance 130kΩ balanced 65kΩ unbalanced SNR 110 dB (20Hz-20kHz) Gain 27.5dB, 1.76v RMS for 220 watts 8Ω (either input) Sensitivity 1.76 V Weight 40 lbs. Dimensions 9⅞" L x 17¼" W x 5⅝" H


    • Seller
      JM Sound
    • Date
      12/16/20
    • Price
      2,150.00 USD
    • Category

     

  15. Canary Audio C1300


    Retail $7900-  Save over 50% warranty/partial trades considered
    Model incorporates the sonic virtues of the 2 chassis C1600 into a single chassis unit. This is the latest with remote(volume only)

    The C1300 is the single chassis version of our highly regarded two chassis preamplifier. It employs an advanced circuitry and high quality components to provide outstanding musical reproduction of your favorite music.

    Like our other products, the C1300 is engineered and built to provide a lifetime of musical enjoyment. The circuitry components used in the C1300 are carefully chosen and hand soldered on the military grade epoxy circuit boards. A motorized attenuator with remote control function is available as an option.
    C1300 Preamplifier Features:

    The power supply circuit uses GZ34, 6V6 and 6SL7 as rectifier.

    The preamp circuit features the use of two 12AX7 and two 12AU7 tubes for a low noise operation.

    Rectifier with choke filtering.

    Custom EI power transformer.

    Swiss made ELMA selector switches with gold-plated contacts.

    Optional motorized attenuator with remote control function.

    Four pairs of single-ended inputs and two pairs of outputs are installed for ease of connectivity.
    SPECIFICATIONS

    Input Impedance: 45,000 Ohms min,110,000 Ohms max
    Output Impedance: 1,400 Ohms
    Maximum Gain: 9 dB
    Frequency Response: +/- 1 dB from 5 Hz to 110,000 Hz
    Hum and Noise: -80 dB
    Maximum Output Voltage before Clipping: 30 Volts
    Total Harmonic Distortion: < 0.04%
    Power Consumption: 35 Watts (true RMS)
    Tube Complement: 2 x 12AU7
    2 x 12AX7
    1 x 5AR4
    1 x 6SL7
    1 x 6V6
    Dimensions: 18.75" W x 14.25" D x 5.50"H
    Net Weight: 35 lbs


    • Seller
      JM Sound
    • Date
      12/13/20
    • Price
      3,650.00 USD
    • Category

     

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