Hafler

Explore Hafler vintage audio equipment in the Vintage Technology Archive.

Power Amplifier

• DH-160 — Hafler DH-160 equalizer — the working-class tone control of the Hafler line, listed at $119 in early-Nineties dealer ads and profiled by Audio in April 1983.
• DH-200 — Hafler DH-200 power amplifier — 100W/ch MOSFET design from 1979, a landmark of affordable high-end audio.
• DH-220 — Hafler DH-220 MOSFET power amp — 115W/ch, kit or factory-built, bridgeable to 350W mono via DH-222. Audio measured 138W/ch before rated THD.
• DH-500 — Hafler DH-500 power amp — MOSFET output, $750 assembled / $600 kit in 1982, 5A speaker fuses, and a deep Musical Concepts mod ecosystem.
• XL-600 — Hafler XL-600 MOSFET power amp — 16 lateral MOSFETs, relay-protected output exceeding 900W/ch into 1 ohm, gold-plated jacks, and the PA-5 driver board.

Power Amplifiers

• 220A — Little is documented about the Hafler 220A. Period audio sources discuss the sibling DH-220; the 220A's own specs are unverified.
• P-225 — Hafler P-225 professional power amplifier: 175W/ch into 4 ohms, MOSFET output stage, mono switch at 350W. A little-documented early-1980s Hafler.
• SE-120 (c. 1990) — Hafler SE-120: 60W/ch MOSFET class AB power amp (c. 1990), DH-120-derived, bridges to 120W into 16 ohms. Rockford-era Hafler.
• XL-280 (c. 1987–1988) — Hafler XL-280 Excelinear stereo power amp, c. 1987–1988. 145 W/ch into 8 ohms, Hitachi lateral MOSFETs, sold as kit and factory-built. Audio (Nov 1987) called it very clean-sounding.

Preamplifier

• SE-130 — Hafler SE-130: a little-documented model from Hafler's 1990 SE Series. Surviving ads and a tuner test report in HiFI-Stereo are the main record.

Preamplifiers

• 101A — Hafler 101A was the factory-wired DH-101A preamp, listed at $295.95–$299.95 in Audio magazine ads from 1979–1982. Find when it was made here.
• 110A — Hafler 110A preamp, little documented. A Dec 1986 Audio classified lists the DH-110A at $440. Find when it was made here.
• DH-101 — The Hafler DH-101 is a stereo preamplifier sold both as a kit and factory-wired. The kit was $199.95 with a metal cabinet; a custom-wired, tested version.
• DH-102 — Hafler DH-102 moving-coil head amp for DH-101; noted in Audio March 1980, dealer ads through 1982. Little documented. Find production years here.
• DH-110 — Hafler DH-110 solid-state preamp, sold as kit ($299.95, 1982) or assembled. Reviewed by HiFI-Stereo in 1982; recapping is the main upkeep.
• DH-330 — Hafler DH-330 FM tuner from the mid-1980s: kit $374.95 or wired $449.95, MOS-FET front end. Reviewed in Audio and HI-Fi-Stereo-Buyers.

Other Models

• DH-100 — Hafler DH-100 preamp — the budget kit that launched a thousand solder joints. Kit $175, assembled $225, and a favorite of Musical Concepts modifiers.
• DH-100A — Hafler DH-100A — the assembled budget preamp from Hafler's mid-1980s lineup, listed at $199.95–$225 in period dealer ads.
• DH-100K — Hafler DH-100K — the kit-form DH-100 preamp, sold at $175 against $225 assembled in the mid-1980s. A builder's budget entry into Hafler's preamp line.
• DH-101A — Hafler DH-101A preamp — the $299.95 factory-wired sibling of the DH-101 kit, a staple of late-'70s budget-audiophile systems.
• DH-101AP — Hafler DH-101AP — factory-wired DH-101 preamp, listed at $399.95 in early-1980s dealer ads. The premium assembled tier of Hafler's kit preamp line.
• DH-101K — Hafler DH-101K kit preamp — the $199.95 build-it-yourself version of the DH-101, advertised throughout the early 1980s.
• DH-103 — Hafler DH-103 black knobs — a $19.95 cosmetic accessory for Hafler kit preamps, listed by dealers through the early 1980s.
• DH-104 — Hafler DH-104 rack-mount bracket, a $24.95 factory accessory for racking DH-series separates, advertised through the early 1980s.
• DH-105 — Hafler DH-105 — the $24.95 cabinet for the DH-101 kit preamp, sold separately in the early 1980s. The finishing touch most kits are missing today.
• DH-106 — Hafler DH-106 — the $19.95 mod kit that upgraded pre-May-1979 DH-101 preamps. A period-correct accessory for early Hafler restorations.
• DH-110A — Hafler DH-110A preamp — $440 assembled, $360 as a kit, three-year warranty. A serviceable mid-line Hafler line stage with thin surviving documentation.
• DH-110K — Hafler DH-110K — the kit-form DH-110 preamp. Sold unassembled for $299.95 vs. $399.95 assembled; prices climbed to $425 by 1988.
• DH-120 — Hafler DH-120 MOSFET power amp — 60W/ch, kit $325 / assembled $375, direct-coupled, ambience-speaker outputs. The affordable workhorse of Hafler separates.
• DH-120K — Hafler DH-120K kit power amplifier — the build-it-yourself sibling of the DH-120, sold at a discount through mid-1980s dealers.
• DH-200A — Hafler DH-200A — factory-wired version of the MOSFET DH-200 power amp, 100 W/ch, sold around $430 in the early 1980s.
• DH-200K — Hafler DH-200K — the kit form of Hafler's DH-200 power amp, a build-it-yourself entry into high-end separates of the late '70s and early '80s.
• DH-220A — Hafler DH-220A power amplifier — factory-assembled DH-220 rated 115 W/ch into 8 ohms, measured 138 W/ch by Audio in 1984. The sweet spot of the Hafler amp line.
• DH-220K — Hafler DH-220K kit power amplifier — dealer ads priced it at $349.95–$400 in the 1980s. The build-it-yourself DH-220.
• DH-500A — Hafler DH-500A power amplifier — the assembled version of the DH-500, sold new for $595–$850 in the mid-1980s and related to the pro P500.
• DH-500K — Hafler DH-500K kit power amplifier — $599.95 kit vs $749.95 assembled, 19-inch metal case, DH-502 bridgeable. The soldering-iron Hafler.
• P-4000 — Hafler P-4000 professional power amp — 200W into 8 ohms, trans•nova/DIAMOND MOSFET design, 1998 Mix Tec Award winner.
• P-505 — Hafler P-505 pro power amp — 400W/ch into 4 ohms, 800W bridged mono, twelve MOSFET outputs. A 48-lb rack workhorse built for installers.
• P500 — Hafler P500 pro power amp — 255W/ch conservatively rated into 8 ohms, six MOSFETs per channel, 800W bridged mono. The studio workhorse bargain.
• PRO-1200 — Hafler PRO-1200 MOSFET power amp — 60 W/ch into 8 Ohms, bridges to 170 W mono, rack-mount, 1992.
• PRO-2400 — Hafler PRO-2400 MOSFET power amplifier — 120W/ch into 8 Ohms, 200W into 4 Ohms, 400W bridged mono. Rack-mount, balanced inputs, three-year warranty.
• PRO-5000 — Hafler PRO-5000 — 325W/ch MOSFET pro power amp, 3.5-inch rack height, 40 lbs, rear-panel controls, $1,200 list.
• SE100 — Hafler SE100 J-FET line preamp, DH-110-derived circuitry, SE Series. Used prices around $287 in early-'90s classifieds.