Demeter HBP-1J-800D Tube Bass Preamplifier with Jensen Transformer

Demeter HBP-1J-800D Tube Bass Preamplifier with Jensen Transformer

Demeter HBP-1J-800D Tube Bass Preamplifier with Jensen Transformer

B&H # DEHBP1J800D MFR # HBP-1J-800D
Demeter HBP-1J-800D Tube Bass Preamplifier with Jensen Transformer

Demeter HBP-1J-800D Tube Bass Preamplifier with Jensen Transformer Back View

Back View

Show MoreLess


Now Viewing:

Important Notice: This item is non-cancelable and non-returnable
Special Order
Expected availability: 7-14 business days 
Free Standard Shipping
Not eligible for Free Expedited Shipping
Man Behind Layer

B&H $1000 Giveaway

Share your most-wanted item with friends & family for chances to win a $1000 B&H Gift Card. It's that easy!

1 new winner announced every week!
Limit 1 entry per day; Come back every day to increase your chance of winning!

Be sure to mention #BHWishList when you share!

Share on Twitter Share on Facebook

Congrats to our winners so far — Lauren K. & Daniel M.

Official Rules


NO PURCHASE IS NECESSARY TO ENTER OR WIN. The B&H $1,000.00 Giveaway (the "Giveaway" or "Sweepstakes") is void where prohibited by law and is sponsored by B&H Foto & Electronics Corp., 440 Ninth Avenue, New York, NY 10001 ("Sponsor"). It is not sponsored or endorsed by Facebook or Twitter in any way.

Entry Period/Methods of Entry. The Sweepstakes will run from on or about November 7, 2016 until on or about December 19, 2016 (the "Entry Period"). Entries received outside the Entry Period are void. Enter the Sweepstakes via either one of the following methods. (1) Share your most wanted item on Facebook or Twitter via the dedicated links found on the B&H Website (; or (2) Mail a postcard (postmarked during the Entry Period) containing your name, address, phone number, and email address, and indicate the subject(s), if any, about which you are interested in receiving future emails from B&H (e.g. photo, video, audio, computers, home theater, portable entertainment ) (optional) to: B&H $1,000.00 Giveaway, c/o B&H Foto & Electronics Corp., 440 Ninth Avenue, New York, NY 10001 (either option, an "Entry"). Entries must not, in the sole and absolute discretion of the Sponsor, contain obscene, provocative, defamatory, sexually explicit, or otherwise objectionable or inappropriate content. Entries deemed by Sponsor to be inappropriate will be disqualified. Entries owned by a third party, or the use of any trademarks, service marks, logos, brands, or products owned by a third-party are not acceptable for entry into the Sweepstakes. Limit 1 entry per person, per day.

Winner Selection/Prizes/Odds. The B&H Social Team will randomly select a winner from among all eligible entries every Monday during the Entry Period, for a total three (3) winners (each a "Winner"). Each Winner will receive a B&H Gift Card pre-valued in the amount of $1000.00. No cash or other substitutions will be offered. Winner selection is in the sole and absolute discretion of the B&H Social Team. Any taxes are the sole responsibility of the winner. Winners will be notified and receive their prize to the e-mail address associated with the account to which their Entry was posted or the email account provided with a mail-in entry. The odds of winning depend on the number of eligible entries received.

Identity of Winners/Eligible Participants. Winners will be identified by the e-mail account associated with the Facebook or Twitter account from which their Entry was submitted or the email account provided with a mail-in entry. An e-mail account holder shall mean the natural person assigned to such e-mail account by the internet access or online service provider or other organization responsible for assigning e-mail addresses for the domain associated with such e-mail account. Any issues regarding the identity of a Winner shall be resolved by Sponsor in its sole discretion. The Sweepstakes is only open to residents of the United States that are at least eighteen (18) years of age on their entry date and is not open to employees of Sponsor, their immediate family, any person domiciled with such employees, or any affiliates or subsidiaries of Sponsor.

Entry Ownership/Entrant Agreements. Entrants retain full ownership and copyrights to their Submission. However, by entering the Sweepstakes entrants grant Sponsor permission to use their Entries for promotional purposes on their respective social media channels with proper credit. Entrants also agree: (a) to be bound by these Official B&H $1,000.00 Giveaway Rules; (b) that any claims related to this Sweepstakes shall be resolved individually without resort to any form of class action and that awards, shall be limited to actual out-of-pocket costs incurred in entering the Sweepstakes, and shall not include incidental or consequential damages or attorneys fees; and (c) that any actual or perceived ambiguities in these rules shall be interpreted by Sponsor in their sole discretion.

Limitation of Liability/Sponsor Modification/Cancellation Rights/ Choice of Law/ Venue/ Winners List. Sponsor is not responsible for incomplete entries or for failure to receive entries due to technical failures or human error of any kind. Winners agree that Sponsor will have no responsibility for losses or damage of any kind resulting from the acceptance, possession, or use of the prizes. Except where prohibited, participation in the Sweepstakes constitutes entrant's consent to the publication of his or her name by Sponsor in any media for commercial or promotional purposes without limitation or further compensation subject to Sponsor's respective Privacy Policies. Sponsor may modify or discontinue the Sweepstakes at any time and may disqualify from the Sweepstakes any person it determines, in its sole discretion, to have attempted to or actually tampered with or otherwise abused any aspect of the Sweepstakes. Entrants agree that in the unlikely event a dispute arises in connection with this Sweepstakes, it will be governed by the laws of the State of New York and heard exclusively in a court of applicable jurisdiction in the County and State of New York irrespective of any choice of law provisions to the contrary. To receive names of the winners by U.S. mail, please mail a self-addressed stamped envelope to: B&H Foto & Electronics Corp., Attn: B&H $1,000.00 Giveaway, 440 Ninth Avenue, New York, NY 10001. Any Winners List request must be received by B&H within one (1) year of the date the Sweepstakes is conducted.

Let us know how to reach you if you win!

Privacy 100% guaranteed; email address for contact purposes only


Already have a B&H account? Just log in tomorrow to enter again!

$0.00 Tax Collected Outside NY

You Pay: $1,850.00

Add to Wish List Item in Wish List
  • 1Description
The HBP-1J-800D Tube Bass Preamplifier with Jensen Transformer from Demeter is a tube bass pre and power amp that delivers 800W of power into a 4 ohm load. It integrates an 800 Watt Class D amplifier into a HBP-1 Preamplifier circuit. This unit uses the same all tube front end found in the VTBP-201 Bass pre-amplifier and combines it with the H Series circuitry found in the professional audio H Series line.

Utilizing the best of both the tube and solid-state world, the HBP-1-800D features a high-voltage (250V) tube front end (providing all of the preamplifier gain and passive tone controls), a two-band solid state fully parametric equalizer that is tuned for bass, a fully adjustable active effects loop with controls up front, a tuner output and a balanced output with switchable mic or line level. It also features both a balanced TRS line level output and an unbalanced line level output for amplifier connections, and a mute switch.

Jensen transformers allow for noiseless operation, whether you use the preamp on its own, or in tandem with the power amp output. The transformer-based design also has the unique advantage of 'warming' up the power amp output. The power amp section features a Speakon and 1/4" speaker output. As with all Demeter equipment, it is meticulously hand-wired using the finest components and assembled in the U.S.A.
In the Box
Demeter HBP-1J-800D Tube Bass Preamplifier with Jensen Transformer
  • Limited 1-Year Warranty
  • Table of Contents
    • 1Description
    Input Impedance > 1 MOhm
    Minimum Load Impedance 600 ohms
    Ouput Impedance 50 ohms, balanced (studio output)
    4 ohms, 8 ohms, 16 ohms (power amp)
    Maximum Output +24 dBV @ 600 ohms
    Output Power 800 watt RMS @ 4 ohms, 500 watt RMS @ 8 ohms (power amp)
    Gain Adjustable to +10 dB mid 440 Hz to 4 kHz
    EQ gain: + or - 15 dB
    Signal to Noise Ratio -80 dB
    THD .5%
    Frequency Response 10 Hz to 40 kHz
    Tube 1-12AX7a selected
    Parametric Equalizer Q or width continuously variable Low 40 Hz to 440 Hz Mid 440 Hz to 4.4 kHz
    Inputs 1/4" (passive and active)
    Outputs Preamp: 3-pin balanced mic/line, TT, XLR & 1/4"
    Power Amp: 1/4" Speaker & Speakon
    Chassis Single space rack
    Operating Voltage 115-230 VAC switchable
    Power Supply 250 V fully regulated
    Filament 12.6 V fully regulated

    Demeter HBP-1J-800D Tube Bass Preamplifier with Jensen Transformer Review

    Be the first to review this item
    See any errors on this page? Let us know.